diff --git a/backend/src/apis/dltConnector/DltConnectorClient.test.ts b/backend/src/apis/dltConnector/DltConnectorClient.test.ts
index 8169be112..5cd7c3269 100644
--- a/backend/src/apis/dltConnector/DltConnectorClient.test.ts
+++ b/backend/src/apis/dltConnector/DltConnectorClient.test.ts
@@ -109,21 +109,6 @@ describe('transmitTransaction', () => {
     expect(result).toBe(false)
   })
   */
-
-  it('invalid transaction type', async () => {
-    const localTransaction = new DbTransaction()
-    localTransaction.typeId = 12
-    try {
-      await DltConnectorClient.getInstance()?.transmitTransaction(
-        new TransactionDraft(localTransaction),
-      )
-    } catch (e) {
-      expect(e).toMatchObject(
-        new LogError('invalid transaction type id: ' + localTransaction.typeId.toString()),
-      )
-    }
-  })
-
   /*
   it.skip('should transmit the transaction and update the dltTransactionId in the database', async () => {
     await transaction.save()
diff --git a/backend/src/apis/dltConnector/DltConnectorClient.ts b/backend/src/apis/dltConnector/DltConnectorClient.ts
index 5bdf60c35..a9a6557d5 100644
--- a/backend/src/apis/dltConnector/DltConnectorClient.ts
+++ b/backend/src/apis/dltConnector/DltConnectorClient.ts
@@ -1,17 +1,11 @@
 import { gql, GraphQLClient } from 'graphql-request'
-// eslint-disable-next-line import/named, n/no-extraneous-import
-import { FetchError } from 'node-fetch'
 
 import { CONFIG } from '@/config'
-import { TransactionTypeId } from '@/graphql/enum/TransactionTypeId'
-import { LogError } from '@/server/LogError'
 import { backendLogger as logger } from '@/server/logger'
 // eslint-disable-next-line import/named, n/no-extraneous-import
 
 import { TransactionDraft } from './model/TransactionDraft'
-import { TransactionLinkDraft } from './model/TransactionLinkDraft'
 import { TransactionResult } from './model/TransactionResult'
-import { UserAccountDraft } from './model/UserAccountDraft'
 
 const sendTransaction = gql`
   mutation ($input: TransactionDraft!) {
@@ -30,40 +24,6 @@ const sendTransaction = gql`
   }
 `
 
-const deferredTransfer = gql`
-  mutation ($input: TransactionLinkDraft!) {
-    deferredTransfer(data: $input) {
-      error {
-        message
-        name
-      }
-      succeed
-      recipe {
-        createdAt
-        type
-        messageIdHex
-      }
-    }
-  }
-`
-
-const registerAddress = gql`
-  mutation ($input: UserAccountDraft!) {
-    registerAddress(data: $input) {
-      error {
-        message
-        name
-      }
-      succeed
-      recipe {
-        createdAt
-        type
-        messageIdHex
-      }
-    }
-  }
-`
-
 // Source: https://refactoring.guru/design-patterns/singleton/typescript/example
 // and ../federation/client/FederationClientFactory.ts
 /**
@@ -116,75 +76,17 @@ export class DltConnectorClient {
     return DltConnectorClient.instance
   }
 
-  private handleTransactionResult(result: TransactionResult) {
-    if (result.error) {
-      throw new Error(result.error.message)
-    }
-    return result
-  }
-
-  private async sendTransaction(input: TransactionDraft) {
+  /**
+   * transmit transaction via dlt-connector to iota
+   * and update dltTransactionId of transaction in db with iota message id
+   */
+  public async sendTransaction(input: TransactionDraft): Promise<TransactionResult | undefined> {
+    logger.debug('transmit transaction or user to dlt connector', input)
     const {
       data: { sendTransaction: result },
     } = await this.client.rawRequest<{ sendTransaction: TransactionResult }>(sendTransaction, {
       input,
     })
-    return this.handleTransactionResult(result)
-  }
-
-  private async deferredTransfer(input: TransactionLinkDraft) {
-    const {
-      data: { deferredTransfer: result },
-    } = await this.client.rawRequest<{ deferredTransfer: TransactionResult }>(deferredTransfer, {
-      input,
-    })
-    return this.handleTransactionResult(result)
-  }
-
-  private async registerAddress(input: UserAccountDraft) {
-    const {
-      data: { registerAddress: result },
-    } = await this.client.rawRequest<{ registerAddress: TransactionResult }>(registerAddress, {
-      input,
-    })
-    return this.handleTransactionResult(result)
-  }
-
-  /**
-   * transmit transaction via dlt-connector to iota
-   * and update dltTransactionId of transaction in db with iota message id
-   */
-  public async transmitTransaction(
-    input: TransactionDraft | UserAccountDraft | TransactionLinkDraft,
-  ): Promise<TransactionResult | undefined> {
-    // we don't need the receive transactions, there contain basically the same data as the send transactions
-    if (
-      input instanceof TransactionDraft &&
-      TransactionTypeId[input.type as keyof typeof TransactionTypeId] === TransactionTypeId.RECEIVE
-    ) {
-      return
-    }
-
-    try {
-      logger.debug('transmit transaction or user to dlt connector', input)
-      if (input instanceof TransactionDraft) {
-        return await this.sendTransaction(input)
-      } else if (input instanceof UserAccountDraft) {
-        return await this.registerAddress(input)
-      } else if (input instanceof TransactionLinkDraft) {
-        return await this.deferredTransfer(input)
-      } else {
-        throw new LogError('unhandled branch reached')
-      }
-    } catch (e) {
-      logger.error(e)
-      if (e instanceof FetchError) {
-        throw e
-      } else if (e instanceof Error) {
-        throw new LogError(`from dlt-connector: ${e.message}`)
-      } else {
-        throw new LogError('Exception sending transfer transaction to dlt-connector', e)
-      }
-    }
+    return result
   }
 }
diff --git a/backend/src/apis/dltConnector/enum/TransactionType.ts b/backend/src/apis/dltConnector/enum/TransactionType.ts
index 51b87c134..095f56c47 100644
--- a/backend/src/apis/dltConnector/enum/TransactionType.ts
+++ b/backend/src/apis/dltConnector/enum/TransactionType.ts
@@ -1,11 +1,18 @@
+import { registerEnumType } from 'type-graphql'
+
 /**
  * Transaction Types on Blockchain
  */
 export enum TransactionType {
-  GRADIDO_TRANSFER = 1,
-  GRADIDO_CREATION = 2,
-  GROUP_FRIENDS_UPDATE = 3,
-  REGISTER_ADDRESS = 4,
-  GRADIDO_DEFERRED_TRANSFER = 5,
-  COMMUNITY_ROOT = 6,
+  GRADIDO_TRANSFER = 'GRADIDO_TRANSFER',
+  GRADIDO_CREATION = 'GRADIDO_CREATION',
+  GROUP_FRIENDS_UPDATE = 'GROUP_FRIENDS_UPDATE',
+  REGISTER_ADDRESS = 'REGISTER_ADDRESS',
+  GRADIDO_DEFERRED_TRANSFER = 'GRADIDO_DEFERRED_TRANSFER',
+  COMMUNITY_ROOT = 'COMMUNITY_ROOT',
 }
+
+registerEnumType(TransactionType, {
+  name: 'TransactionType', // this one is mandatory
+  description: 'Type of the transaction', // this one is optional
+})
diff --git a/backend/src/apis/dltConnector/interaction/transactionToDlt/AbstractTransactionToDlt.role.ts b/backend/src/apis/dltConnector/interaction/transactionToDlt/AbstractTransactionToDlt.role.ts
index c1a73edd0..e21b853e6 100644
--- a/backend/src/apis/dltConnector/interaction/transactionToDlt/AbstractTransactionToDlt.role.ts
+++ b/backend/src/apis/dltConnector/interaction/transactionToDlt/AbstractTransactionToDlt.role.ts
@@ -3,8 +3,6 @@ import { ObjectLiteral, OrderByCondition, SelectQueryBuilder } from '@dbTools/ty
 import { DltTransaction } from '@entity/DltTransaction'
 
 import { TransactionDraft } from '@dltConnector/model/TransactionDraft'
-import { TransactionLinkDraft } from '@dltConnector/model/TransactionLinkDraft'
-import { UserAccountDraft } from '@dltConnector/model/UserAccountDraft'
 
 import { backendLogger as logger } from '@/server/logger'
 
@@ -14,10 +12,7 @@ export abstract class AbstractTransactionToDltRole<T extends ObjectLiteral> {
   // public interface
   public abstract initWithLast(): Promise<this>
   public abstract getTimestamp(): number
-  public abstract convertToGraphqlInput():
-    | TransactionDraft
-    | UserAccountDraft
-    | TransactionLinkDraft
+  public abstract convertToGraphqlInput(): TransactionDraft
 
   public getEntity(): T | null {
     return this.self
@@ -48,7 +43,7 @@ export abstract class AbstractTransactionToDltRole<T extends ObjectLiteral> {
     qb: SelectQueryBuilder<T>,
     joinCondition: string,
     orderBy: OrderByCondition,
-  ): Promise<T | null> {
+  ): SelectQueryBuilder<T> {
     return qb
       .leftJoin(DltTransaction, 'dltTransaction', joinCondition)
       .where('dltTransaction.user_id IS NULL')
@@ -56,7 +51,6 @@ export abstract class AbstractTransactionToDltRole<T extends ObjectLiteral> {
       .andWhere('dltTransaction.transaction_link_Id IS NULL')
       .orderBy(orderBy)
       .limit(1)
-      .getOne()
   }
 
   protected createDltTransactionEntry(messageId: string, error: string | null): DltTransaction {
diff --git a/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionLinkToDlt.role.ts b/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionLinkToDlt.role.ts
index 5b1efdad6..8aeccfa91 100644
--- a/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionLinkToDlt.role.ts
+++ b/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionLinkToDlt.role.ts
@@ -1,9 +1,11 @@
 import { DltTransaction } from '@entity/DltTransaction'
 import { TransactionLink } from '@entity/TransactionLink'
 
+import { TransactionType } from '@dltConnector/enum/TransactionType'
+import { CommunityUser } from '@dltConnector/model/CommunityUser'
+import { IdentifierSeed } from '@dltConnector/model/IdentifierSeed'
 import { TransactionDraft } from '@dltConnector/model/TransactionDraft'
-import { TransactionLinkDraft } from '@dltConnector/model/TransactionLinkDraft'
-import { UserAccountDraft } from '@dltConnector/model/UserAccountDraft'
+import { UserIdentifier } from '@dltConnector/model/UserIdentifier'
 
 import { LogError } from '@/server/LogError'
 
@@ -19,7 +21,7 @@ export class TransactionLinkToDltRole extends AbstractTransactionToDltRole<Trans
       'TransactionLink.id = dltTransaction.transactionLinkId',
       // eslint-disable-next-line camelcase
       { TransactionLink_createdAt: 'ASC', User_id: 'ASC' },
-    )
+    ).getOne()
     return this
   }
 
@@ -30,11 +32,19 @@ export class TransactionLinkToDltRole extends AbstractTransactionToDltRole<Trans
     return this.self.createdAt.getTime()
   }
 
-  public convertToGraphqlInput(): TransactionDraft | UserAccountDraft | TransactionLinkDraft {
+  public convertToGraphqlInput(): TransactionDraft {
     if (!this.self) {
       throw new LogError('try to create dlt entry for empty transaction link')
     }
-    return new TransactionLinkDraft(this.self)
+    const draft = new TransactionDraft()
+    draft.amount = this.self.amount.abs().toString()
+    const user = this.self.user
+    draft.user = new UserIdentifier(user.communityUuid, new CommunityUser(user.gradidoID))
+    draft.linkedUser = new UserIdentifier(user.communityUuid, new IdentifierSeed(this.self.code))
+    draft.createdAt = this.self.createdAt.toISOString()
+    draft.timeoutDate = this.self.validUntil.toISOString()
+    draft.type = TransactionType.GRADIDO_DEFERRED_TRANSFER
+    return draft
   }
 
   protected setJoinId(dltTransaction: DltTransaction): void {
diff --git a/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionToDlt.role.ts b/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionToDlt.role.ts
index 10aa3d622..d30dc47cf 100644
--- a/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionToDlt.role.ts
+++ b/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionToDlt.role.ts
@@ -1,10 +1,13 @@
 import { DltTransaction } from '@entity/DltTransaction'
 import { Transaction } from '@entity/Transaction'
 
+import { TransactionType } from '@dltConnector/enum/TransactionType'
+import { CommunityUser } from '@dltConnector/model/CommunityUser'
+import { IdentifierSeed } from '@dltConnector/model/IdentifierSeed'
 import { TransactionDraft } from '@dltConnector/model/TransactionDraft'
-import { TransactionLinkDraft } from '@dltConnector/model/TransactionLinkDraft'
-import { UserAccountDraft } from '@dltConnector/model/UserAccountDraft'
+import { UserIdentifier } from '@dltConnector/model/UserIdentifier'
 
+import { TransactionTypeId } from '@/graphql/enum/TransactionTypeId'
 import { LogError } from '@/server/LogError'
 
 import { AbstractTransactionToDltRole } from './AbstractTransactionToDlt.role'
@@ -15,11 +18,17 @@ import { AbstractTransactionToDltRole } from './AbstractTransactionToDlt.role'
 export class TransactionToDltRole extends AbstractTransactionToDltRole<Transaction> {
   async initWithLast(): Promise<this> {
     this.self = await this.createQueryForPendingItems(
-      Transaction.createQueryBuilder(),
+      Transaction.createQueryBuilder().leftJoinAndSelect(
+        'Transaction.transactionLink',
+        'transactionLink',
+      ),
       'Transaction.id = dltTransaction.transactionId',
       // eslint-disable-next-line camelcase
       { balance_date: 'ASC', Transaction_id: 'ASC' },
     )
+      // we don't need the receive transactions, there contain basically the same data as the send transactions
+      .andWhere('transaction.typeId NOT :typeId', { typeId: TransactionTypeId.RECEIVE })
+      .getOne()
     return this
   }
 
@@ -30,11 +39,53 @@ export class TransactionToDltRole extends AbstractTransactionToDltRole<Transacti
     return this.self.balanceDate.getTime()
   }
 
-  public convertToGraphqlInput(): TransactionDraft | UserAccountDraft | TransactionLinkDraft {
+  public convertToGraphqlInput(): TransactionDraft {
     if (!this.self) {
       throw new LogError('try to create dlt entry for empty transaction')
     }
-    return new TransactionDraft(this.self)
+    const draft = new TransactionDraft()
+    draft.amount = this.self.amount.abs().toString()
+
+    if (
+      !this.self.linkedUserGradidoID ||
+      !this.self.linkedUserCommunityUuid ||
+      !this.self.userCommunityUuid
+    ) {
+      throw new LogError(
+        `missing necessary field in transaction: ${this.self.id}, need linkedUserGradidoID, linkedUserCommunityUuid and userCommunityUuid`,
+      )
+    }
+    // it is a redeem of a transaction link?
+    const transactionLink = this.self.transactionLink
+    if (transactionLink) {
+      draft.user = new UserIdentifier(
+        this.self.userCommunityUuid,
+        new IdentifierSeed(transactionLink.code),
+      )
+    } else {
+      draft.user = new UserIdentifier(
+        this.self.userCommunityUuid,
+        new CommunityUser(this.self.userGradidoID),
+      )
+    }
+    draft.linkedUser = new UserIdentifier(
+      this.self.linkedUserCommunityUuid,
+      new CommunityUser(this.self.linkedUserGradidoID),
+    )
+    draft.createdAt = this.self.balanceDate.toISOString()
+    draft.targetDate = this.self.creationDate?.toISOString()
+    switch (this.self.typeId as TransactionTypeId) {
+      case TransactionTypeId.CREATION:
+        draft.type = TransactionType.GRADIDO_CREATION
+        break
+      case TransactionTypeId.SEND:
+      case TransactionTypeId.RECEIVE:
+        draft.type = TransactionType.GRADIDO_TRANSFER
+        break
+      default:
+        throw new LogError('wrong role for type', this.self.typeId as TransactionTypeId)
+    }
+    return draft
   }
 
   protected setJoinId(dltTransaction: DltTransaction): void {
diff --git a/backend/src/apis/dltConnector/interaction/transactionToDlt/UserToDlt.role.ts b/backend/src/apis/dltConnector/interaction/transactionToDlt/UserToDlt.role.ts
index a59335e15..6cbe46853 100644
--- a/backend/src/apis/dltConnector/interaction/transactionToDlt/UserToDlt.role.ts
+++ b/backend/src/apis/dltConnector/interaction/transactionToDlt/UserToDlt.role.ts
@@ -1,9 +1,11 @@
 import { DltTransaction } from '@entity/DltTransaction'
 import { User } from '@entity/User'
 
+import { AccountType } from '@dltConnector/enum/AccountType'
+import { TransactionType } from '@dltConnector/enum/TransactionType'
+import { CommunityUser } from '@dltConnector/model/CommunityUser'
 import { TransactionDraft } from '@dltConnector/model/TransactionDraft'
-import { TransactionLinkDraft } from '@dltConnector/model/TransactionLinkDraft'
-import { UserAccountDraft } from '@dltConnector/model/UserAccountDraft'
+import { UserIdentifier } from '@dltConnector/model/UserIdentifier'
 
 import { LogError } from '@/server/LogError'
 
@@ -19,7 +21,7 @@ export class UserToDltRole extends AbstractTransactionToDltRole<User> {
       'User.id = dltTransaction.userId',
       // eslint-disable-next-line camelcase
       { User_created_at: 'ASC', User_id: 'ASC' },
-    )
+    ).getOne()
     return this
   }
 
@@ -30,11 +32,16 @@ export class UserToDltRole extends AbstractTransactionToDltRole<User> {
     return this.self.createdAt.getTime()
   }
 
-  public convertToGraphqlInput(): TransactionDraft | UserAccountDraft | TransactionLinkDraft {
+  public convertToGraphqlInput(): TransactionDraft {
     if (!this.self) {
       throw new LogError('try to create dlt entry for empty transaction')
     }
-    return new UserAccountDraft(this.self)
+    const draft = new TransactionDraft()
+    draft.user = new UserIdentifier(this.self.communityUuid, new CommunityUser(this.self.gradidoID))
+    draft.createdAt = this.self.createdAt.toISOString()
+    draft.accountType = AccountType.COMMUNITY_HUMAN
+    draft.type = TransactionType.REGISTER_ADDRESS
+    return draft
   }
 
   protected setJoinId(dltTransaction: DltTransaction): void {
diff --git a/backend/src/apis/dltConnector/interaction/transactionToDlt/transactionToDlt.context.ts b/backend/src/apis/dltConnector/interaction/transactionToDlt/transactionToDlt.context.ts
index 9e56eee81..7bf271cd0 100644
--- a/backend/src/apis/dltConnector/interaction/transactionToDlt/transactionToDlt.context.ts
+++ b/backend/src/apis/dltConnector/interaction/transactionToDlt/transactionToDlt.context.ts
@@ -1,12 +1,9 @@
-import { EntityPropertyNotFoundError, QueryFailedError, TypeORMError } from '@dbTools/typeorm'
 import { Transaction } from '@entity/Transaction'
 import { TransactionLink } from '@entity/TransactionLink'
 import { User } from '@entity/User'
-// eslint-disable-next-line import/named, n/no-extraneous-import
-import { FetchError } from 'node-fetch'
 
 import { DltConnectorClient } from '@/apis/dltConnector/DltConnectorClient'
-import { TransactionResult } from '@/apis/dltConnector/model/TransactionResult'
+import { backendLogger as logger } from '@/server/logger'
 
 import { AbstractTransactionToDltRole } from './AbstractTransactionToDlt.role'
 import { TransactionLinkToDltRole } from './TransactionLinkToDlt.role'
@@ -40,21 +37,17 @@ export async function transactionToDlt(dltConnector: DltConnectorClient): Promis
     if (!pendingTransaction) {
       break
     }
-    let result: TransactionResult | undefined
     let messageId = ''
     let error: string | null = null
 
-    try {
-      result = await dltConnector.transmitTransaction(
-        pendingTransactionRole.convertToGraphqlInput(),
-      )
-      if (result?.succeed && result.recipe) {
-        messageId = result.recipe.messageIdHex
-      } else {
-        error = 'skipped'
-      }
-    } catch (e) {
-      error = e instanceof Error ? e.message : String(e)
+    const result = await dltConnector.sendTransaction(
+      pendingTransactionRole.convertToGraphqlInput(),
+    )
+    if (result?.succeed && result.recipe) {
+      messageId = result.recipe.messageIdHex
+    } else if (result?.error) {
+      error = result.error.message
+      logger.error('error from dlt-connector', result.error)
     }
 
     await pendingTransactionRole.saveTransactionResult(messageId, error)
diff --git a/backend/src/apis/dltConnector/model/CommunityUser.ts b/backend/src/apis/dltConnector/model/CommunityUser.ts
new file mode 100644
index 000000000..0a4eadebf
--- /dev/null
+++ b/backend/src/apis/dltConnector/model/CommunityUser.ts
@@ -0,0 +1,10 @@
+export class CommunityUser {
+  // for community user, uuid and communityUuid used
+  uuid: string
+  accountNr?: number
+
+  constructor(uuid: string, accountNr?: number) {
+    this.uuid = uuid
+    this.accountNr = accountNr
+  }
+}
diff --git a/backend/src/apis/dltConnector/model/IdentifierSeed.ts b/backend/src/apis/dltConnector/model/IdentifierSeed.ts
new file mode 100644
index 000000000..7f7e2fe34
--- /dev/null
+++ b/backend/src/apis/dltConnector/model/IdentifierSeed.ts
@@ -0,0 +1,9 @@
+// https://www.npmjs.com/package/@apollo/protobufjs
+
+export class IdentifierSeed {
+  seed: string
+
+  constructor(seed: string) {
+    this.seed = seed
+  }
+}
diff --git a/backend/src/apis/dltConnector/model/TransactionDraft.ts b/backend/src/apis/dltConnector/model/TransactionDraft.ts
index e31003986..8a2d7bdd5 100755
--- a/backend/src/apis/dltConnector/model/TransactionDraft.ts
+++ b/backend/src/apis/dltConnector/model/TransactionDraft.ts
@@ -1,39 +1,21 @@
 // https://www.npmjs.com/package/@apollo/protobufjs
-import { Transaction } from '@entity/Transaction'
-
-import { TransactionTypeId } from '@/graphql/enum/TransactionTypeId'
-import { LogError } from '@/server/LogError'
+import { AccountType } from '@dltConnector/enum/AccountType'
+import { TransactionType } from '@dltConnector/enum/TransactionType'
 
 import { UserIdentifier } from './UserIdentifier'
 
 export class TransactionDraft {
   user: UserIdentifier
-  linkedUser: UserIdentifier
-  amount: string
-  type: string
+  // not used for simply register address
+  linkedUser?: UserIdentifier
+  // not used for register address
+  amount?: string
+  type: TransactionType
   createdAt: string
-  // only for creation transactions
+  // only for creation transaction
   targetDate?: string
-
-  constructor(transaction: Transaction) {
-    this.amount = transaction.amount.abs().toString()
-
-    if (
-      !transaction.linkedUserGradidoID ||
-      !transaction.linkedUserCommunityUuid ||
-      !transaction.userCommunityUuid
-    ) {
-      throw new LogError(
-        `missing necessary field in transaction: ${transaction.id}, need linkedUserGradidoID, linkedUserCommunityUuid and userCommunityUuid`,
-      )
-    }
-    this.user = new UserIdentifier(transaction.userGradidoID, transaction.userCommunityUuid)
-    this.linkedUser = new UserIdentifier(
-      transaction.linkedUserGradidoID,
-      transaction.linkedUserCommunityUuid,
-    )
-    this.createdAt = transaction.balanceDate.toISOString()
-    this.targetDate = transaction.creationDate?.toISOString()
-    this.type = TransactionTypeId[transaction.typeId]
-  }
+  // only for deferred transaction
+  timeoutDate?: string
+  // only for register address
+  accountType?: AccountType
 }
diff --git a/backend/src/apis/dltConnector/model/TransactionLinkDraft.ts b/backend/src/apis/dltConnector/model/TransactionLinkDraft.ts
deleted file mode 100644
index 1a12f552b..000000000
--- a/backend/src/apis/dltConnector/model/TransactionLinkDraft.ts
+++ /dev/null
@@ -1,21 +0,0 @@
-// https://www.npmjs.com/package/@apollo/protobufjs
-import { TransactionLink } from '@entity/TransactionLink'
-
-import { UserIdentifier } from './UserIdentifier'
-
-export class TransactionLinkDraft {
-  user: UserIdentifier
-  seed: string
-  amount: string
-  createdAt: string
-  timeoutDate: string
-
-  constructor(transaction: TransactionLink) {
-    this.amount = transaction.amount.abs().toString()
-    const user = transaction.user
-    this.user = new UserIdentifier(user.gradidoID, user.communityUuid)
-    this.seed = transaction.code
-    this.createdAt = transaction.createdAt.toISOString()
-    this.timeoutDate = transaction.validUntil.toISOString()
-  }
-}
diff --git a/backend/src/apis/dltConnector/model/UserAccountDraft.ts b/backend/src/apis/dltConnector/model/UserAccountDraft.ts
deleted file mode 100644
index dc52065d1..000000000
--- a/backend/src/apis/dltConnector/model/UserAccountDraft.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { User } from '@entity/User'
-
-import { AccountType } from '@/apis/dltConnector/enum/AccountType'
-
-import { UserIdentifier } from './UserIdentifier'
-
-export class UserAccountDraft {
-  user: UserIdentifier
-  createdAt: string
-  accountType: AccountType
-
-  constructor(user: User) {
-    this.user = new UserIdentifier(user.gradidoID, user.communityUuid)
-    this.createdAt = user.createdAt.toISOString()
-    this.accountType = AccountType.COMMUNITY_HUMAN
-  }
-}
diff --git a/backend/src/apis/dltConnector/model/UserIdentifier.ts b/backend/src/apis/dltConnector/model/UserIdentifier.ts
index 1824d17f3..059405bd0 100644
--- a/backend/src/apis/dltConnector/model/UserIdentifier.ts
+++ b/backend/src/apis/dltConnector/model/UserIdentifier.ts
@@ -1,11 +1,17 @@
-export class UserIdentifier {
-  uuid: string
-  communityUuid: string
-  accountNr?: number
+import { CommunityUser } from './CommunityUser'
+import { IdentifierSeed } from './IdentifierSeed'
 
-  constructor(uuid: string, communityUuid: string, accountNr?: number) {
-    this.uuid = uuid
+export class UserIdentifier {
+  communityUuid: string
+  communityUser?: CommunityUser
+  seed?: IdentifierSeed // used for deferred transfers
+
+  constructor(communityUuid: string, input: CommunityUser | IdentifierSeed) {
+    if (input instanceof CommunityUser) {
+      this.communityUser = input
+    } else if (input instanceof IdentifierSeed) {
+      this.seed = input
+    }
     this.communityUuid = communityUuid
-    this.accountNr = accountNr
   }
 }
diff --git a/database/entity/0088-merge_dlt_tables/Transaction.ts b/database/entity/0088-merge_dlt_tables/Transaction.ts
new file mode 100644
index 000000000..d5abed738
--- /dev/null
+++ b/database/entity/0088-merge_dlt_tables/Transaction.ts
@@ -0,0 +1,176 @@
+/* eslint-disable no-use-before-define */
+import { Decimal } from 'decimal.js-light'
+import {
+  BaseEntity,
+  Entity,
+  PrimaryGeneratedColumn,
+  Column,
+  OneToOne,
+  JoinColumn,
+  ManyToOne,
+} from 'typeorm'
+import { DecimalTransformer } from '../../src/typeorm/DecimalTransformer'
+import { Contribution } from '../Contribution'
+import { DltTransaction } from '../DltTransaction'
+import { TransactionLink } from '../TransactionLink'
+
+@Entity('transactions')
+export class Transaction extends BaseEntity {
+  @PrimaryGeneratedColumn('increment', { unsigned: true })
+  id: number
+
+  @Column({ type: 'int', unsigned: true, unique: true, nullable: true, default: null })
+  previous: number | null
+
+  @Column({ name: 'type_id', unsigned: true, nullable: false })
+  typeId: number
+
+  @Column({
+    name: 'transaction_link_id',
+    type: 'int',
+    unsigned: true,
+    nullable: true,
+    default: null,
+  })
+  transactionLinkId?: number | null
+
+  @Column({
+    type: 'decimal',
+    precision: 40,
+    scale: 20,
+    nullable: false,
+    transformer: DecimalTransformer,
+  })
+  amount: Decimal
+
+  @Column({
+    type: 'decimal',
+    precision: 40,
+    scale: 20,
+    nullable: false,
+    transformer: DecimalTransformer,
+  })
+  balance: Decimal
+
+  @Column({
+    name: 'balance_date',
+    type: 'datetime',
+    default: () => 'CURRENT_TIMESTAMP',
+    nullable: false,
+  })
+  balanceDate: Date
+
+  @Column({
+    type: 'decimal',
+    precision: 40,
+    scale: 20,
+    nullable: false,
+    transformer: DecimalTransformer,
+  })
+  decay: Decimal
+
+  @Column({
+    name: 'decay_start',
+    type: 'datetime',
+    nullable: true,
+    default: null,
+  })
+  decayStart: Date | null
+
+  @Column({ length: 255, nullable: false, collation: 'utf8mb4_unicode_ci' })
+  memo: string
+
+  @Column({ name: 'creation_date', type: 'datetime', nullable: true, default: null })
+  creationDate: Date | null
+
+  @Column({ name: 'user_id', unsigned: true, nullable: false })
+  userId: number
+
+  @Column({
+    name: 'user_community_uuid',
+    type: 'varchar',
+    length: 36,
+    nullable: true,
+    collation: 'utf8mb4_unicode_ci',
+  })
+  userCommunityUuid: string | null
+
+  @Column({
+    name: 'user_gradido_id',
+    type: 'varchar',
+    length: 36,
+    nullable: false,
+    collation: 'utf8mb4_unicode_ci',
+  })
+  userGradidoID: string
+
+  @Column({
+    name: 'user_name',
+    type: 'varchar',
+    length: 512,
+    nullable: true,
+    collation: 'utf8mb4_unicode_ci',
+  })
+  userName: string | null
+
+  @Column({
+    name: 'linked_user_id',
+    type: 'int',
+    unsigned: true,
+    nullable: true,
+    default: null,
+  })
+  linkedUserId?: number | null
+
+  @Column({
+    name: 'linked_user_community_uuid',
+    type: 'varchar',
+    length: 36,
+    nullable: true,
+    collation: 'utf8mb4_unicode_ci',
+  })
+  linkedUserCommunityUuid: string | null
+
+  @Column({
+    name: 'linked_user_gradido_id',
+    type: 'varchar',
+    length: 36,
+    nullable: true,
+    collation: 'utf8mb4_unicode_ci',
+  })
+  linkedUserGradidoID: string | null
+
+  @Column({
+    name: 'linked_user_name',
+    type: 'varchar',
+    length: 512,
+    nullable: true,
+    collation: 'utf8mb4_unicode_ci',
+  })
+  linkedUserName: string | null
+
+  @Column({
+    name: 'linked_transaction_id',
+    type: 'int',
+    unsigned: true,
+    nullable: true,
+    default: null,
+  })
+  linkedTransactionId?: number | null
+
+  @OneToOne(() => Contribution, (contribution) => contribution.transaction)
+  @JoinColumn({ name: 'id', referencedColumnName: 'transactionId' })
+  contribution?: Contribution | null
+
+  @OneToOne(() => DltTransaction, (dlt) => dlt.transactionId)
+  @JoinColumn({ name: 'id', referencedColumnName: 'transactionId' })
+  dltTransaction?: DltTransaction | null
+
+  @OneToOne(() => Transaction)
+  @JoinColumn({ name: 'previous' })
+  previousTransaction?: Transaction | null
+
+  @ManyToOne(() => TransactionLink, (transactionLink) => transactionLink.transactions)
+  @JoinColumn({ name: 'transactionLinkId' })
+  transactionLink?: TransactionLink | null
+}
diff --git a/database/entity/0088-merge_dlt_tables/TransactionLink.ts b/database/entity/0088-merge_dlt_tables/TransactionLink.ts
index 72c80195b..937544bd9 100644
--- a/database/entity/0088-merge_dlt_tables/TransactionLink.ts
+++ b/database/entity/0088-merge_dlt_tables/TransactionLink.ts
@@ -7,10 +7,12 @@ import {
   DeleteDateColumn,
   OneToOne,
   JoinColumn,
+  OneToMany,
 } from 'typeorm'
 import { DecimalTransformer } from '../../src/typeorm/DecimalTransformer'
 import { DltTransaction } from '../DltTransaction'
 import { User } from '../User'
+import { Transaction } from '../Transaction'
 
 @Entity('transaction_links')
 export class TransactionLink extends BaseEntity {
@@ -76,4 +78,8 @@ export class TransactionLink extends BaseEntity {
   @OneToOne(() => User, (user) => user.transactionLink)
   @JoinColumn({ name: 'userId' })
   user: User
+
+  @OneToMany(() => Transaction, (transaction) => transaction.transactionLink)
+  @JoinColumn({ referencedColumnName: 'transactionLinkId' })
+  transactions: Transaction[]
 }
diff --git a/database/entity/Transaction.ts b/database/entity/Transaction.ts
index d1d7075a9..7b014e17a 100644
--- a/database/entity/Transaction.ts
+++ b/database/entity/Transaction.ts
@@ -1 +1 @@
-export { Transaction } from './0072-add_communityuuid_to_transactions_table/Transaction'
+export { Transaction } from './0088-merge_dlt_tables/Transaction'
diff --git a/database/logging/TransactionLinkLogging.view.ts b/database/logging/TransactionLinkLogging.view.ts
new file mode 100644
index 000000000..781916131
--- /dev/null
+++ b/database/logging/TransactionLinkLogging.view.ts
@@ -0,0 +1,35 @@
+/* eslint-disable no-unused-vars */
+import { TransactionLink } from '../entity/TransactionLink'
+import { AbstractLoggingView } from './AbstractLogging.view'
+import { DltTransactionLoggingView } from './DltTransactionLogging.view'
+import { TransactionLoggingView } from './TransactionLogging.view'
+import { UserLoggingView } from './UserLogging.view'
+
+export class TransactionLinkLoggingView extends AbstractLoggingView {
+  public constructor(private self: TransactionLink) {
+    super()
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  public toJSON(): any {
+    return {
+      id: this.self.id,
+      userId: this.self.userId,
+      amount: this.decimalToString(this.self.amount),
+      holdAvailableAmount: this.decimalToString(this.self.holdAvailableAmount),
+      memoLength: this.self.memo.length,
+      createdAt: this.dateToString(this.self.createdAt),
+      deletedAt: this.dateToString(this.self.deletedAt),
+      validUntil: this.dateToString(this.self.validUntil),
+      redeemedAt: this.dateToString(this.self.redeemedAt),
+      redeemedBy: this.self.redeemedBy,
+      dltTransaction: this.self.dltTransaction
+        ? new DltTransactionLoggingView(this.self.dltTransaction).toJSON()
+        : undefined,
+      user: this.self.user ? new UserLoggingView(this.self.user).toJSON() : undefined,
+      transactions: this.self.transactions.forEach(
+        (transaction) => new TransactionLoggingView(transaction),
+      ),
+    }
+  }
+}
diff --git a/database/logging/TransactionLogging.view.ts b/database/logging/TransactionLogging.view.ts
index 7912c7e5d..fff2b46cb 100644
--- a/database/logging/TransactionLogging.view.ts
+++ b/database/logging/TransactionLogging.view.ts
@@ -1,8 +1,10 @@
 /* eslint-disable no-unused-vars */
+import { LargeNumberLike } from 'crypto'
 import { Transaction } from '../entity/Transaction'
 import { AbstractLoggingView } from './AbstractLogging.view'
 import { ContributionLoggingView } from './ContributionLogging.view'
 import { DltTransactionLoggingView } from './DltTransactionLogging.view'
+import { TransactionLinkLoggingView } from './TransactionLinkLogging.view'
 
 // TODO: move enum into database, maybe rename database
 enum TransactionTypeId {
@@ -43,7 +45,7 @@ export class TransactionLoggingView extends AbstractLoggingView {
       linkedUserName: this.self.linkedUserName?.substring(0, 3) + '...',
       linkedTransactionId: this.self.linkedTransactionId,
       contribution: this.self.contribution
-        ? new ContributionLoggingView(this.self.contribution)
+        ? new ContributionLoggingView(this.self.contribution).toJSON()
         : undefined,
       dltTransaction: this.self.dltTransaction
         ? new DltTransactionLoggingView(this.self.dltTransaction).toJSON()
@@ -51,6 +53,9 @@ export class TransactionLoggingView extends AbstractLoggingView {
       previousTransaction: this.self.previousTransaction
         ? new TransactionLoggingView(this.self.previousTransaction).toJSON()
         : undefined,
+      transactionLink: this.self.transactionLink
+        ? new TransactionLinkLoggingView(this.self.transactionLink).toJSON()
+        : undefined,
     }
   }
 }
diff --git a/dlt-connector/src/graphql/enum/InputTransactionType.ts b/dlt-connector/src/graphql/enum/InputTransactionType.ts
index 94cd39ff3..20e5e40f9 100755
--- a/dlt-connector/src/graphql/enum/InputTransactionType.ts
+++ b/dlt-connector/src/graphql/enum/InputTransactionType.ts
@@ -3,12 +3,12 @@ import { registerEnumType } from 'type-graphql'
 // enum for graphql but with int because it is the same in backend
 // for transaction type from backend
 export enum InputTransactionType {
-  CREATION = 1,
-  SEND = 2,
-  RECEIVE = 3,
-  // This is a virtual property, never occurring on the database
-  DECAY = 4,
-  LINK_SUMMARY = 5,
+  GRADIDO_TRANSFER = 'GRADIDO_TRANSFER',
+  GRADIDO_CREATION = 'GRADIDO_CREATION',
+  GROUP_FRIENDS_UPDATE = 'GROUP_FRIENDS_UPDATE',
+  REGISTER_ADDRESS = 'REGISTER_ADDRESS',
+  GRADIDO_DEFERRED_TRANSFER = 'GRADIDO_DEFERRED_TRANSFER',
+  COMMUNITY_ROOT = 'COMMUNITY_ROOT',
 }
 
 registerEnumType(InputTransactionType, {
diff --git a/dlt-connector/src/graphql/input/CommunityDraft.ts b/dlt-connector/src/graphql/input/CommunityDraft.ts
index 665e10b75..0b26e68d0 100644
--- a/dlt-connector/src/graphql/input/CommunityDraft.ts
+++ b/dlt-connector/src/graphql/input/CommunityDraft.ts
@@ -1,10 +1,9 @@
 // https://www.npmjs.com/package/@apollo/protobufjs
 
+import { isValidDateString } from '@validator/DateString'
 import { IsBoolean, IsUUID } from 'class-validator'
 import { Field, InputType } from 'type-graphql'
 
-import { isValidDateString } from '@validator/DateString'
-
 @InputType()
 export class CommunityDraft {
   @Field(() => String)
diff --git a/dlt-connector/src/graphql/input/CommunityUser.ts b/dlt-connector/src/graphql/input/CommunityUser.ts
new file mode 100644
index 000000000..97eff7a76
--- /dev/null
+++ b/dlt-connector/src/graphql/input/CommunityUser.ts
@@ -0,0 +1,15 @@
+// https://www.npmjs.com/package/@apollo/protobufjs
+
+import { IsPositive, IsUUID } from 'class-validator'
+import { Field, Int, InputType } from 'type-graphql'
+
+@InputType()
+export class CommunityUser {
+  @Field(() => String)
+  @IsUUID('4')
+  uuid: string
+
+  @Field(() => Int, { defaultValue: 1, nullable: true })
+  @IsPositive()
+  accountNr?: number
+}
diff --git a/dlt-connector/src/graphql/input/TransactionDraft.ts b/dlt-connector/src/graphql/input/TransactionDraft.ts
index d1fa48c3c..3b2099ab6 100755
--- a/dlt-connector/src/graphql/input/TransactionDraft.ts
+++ b/dlt-connector/src/graphql/input/TransactionDraft.ts
@@ -4,6 +4,8 @@ import { isValidDateString, isValidNumberString } from '@validator/DateString'
 import { IsEnum, IsObject, ValidateNested } from 'class-validator'
 import { InputType, Field } from 'type-graphql'
 
+import { AccountType } from '@/graphql/enum/AccountType'
+
 import { UserIdentifier } from './UserIdentifier'
 
 @InputType()
@@ -13,14 +15,16 @@ export class TransactionDraft {
   @ValidateNested()
   user: UserIdentifier
 
-  @Field(() => UserIdentifier)
+  // not used for simply register address
+  @Field(() => UserIdentifier, { nullable: true })
   @IsObject()
   @ValidateNested()
-  linkedUser: UserIdentifier
+  linkedUser?: UserIdentifier
 
-  @Field(() => String)
+  // not used for register address
+  @Field(() => String, { nullable: true })
   @isValidNumberString()
-  amount: string
+  amount?: string
 
   @Field(() => InputTransactionType)
   @IsEnum(InputTransactionType)
@@ -34,4 +38,14 @@ export class TransactionDraft {
   @Field(() => String, { nullable: true })
   @isValidDateString()
   targetDate?: string
+
+  // only for deferred transaction
+  @Field(() => String, { nullable: true })
+  @isValidDateString()
+  timeoutDate?: string
+
+  // only for register address
+  @Field(() => AccountType, { nullable: true })
+  @IsEnum(AccountType)
+  accountType?: AccountType
 }
diff --git a/dlt-connector/src/graphql/input/TransactionLinkDraft.ts b/dlt-connector/src/graphql/input/TransactionLinkDraft.ts
deleted file mode 100644
index 7ac621e35..000000000
--- a/dlt-connector/src/graphql/input/TransactionLinkDraft.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-// https://www.npmjs.com/package/@apollo/protobufjs
-import { isValidDateString, isValidNumberString } from '@validator/DateString'
-import { IsObject, IsString, ValidateNested } from 'class-validator'
-import { InputType, Field } from 'type-graphql'
-
-import { UserIdentifier } from './UserIdentifier'
-
-@InputType()
-export class TransactionLinkDraft {
-  @Field(() => UserIdentifier)
-  @IsObject()
-  @ValidateNested()
-  user: UserIdentifier
-
-  @Field(() => String)
-  @IsString()
-  seed: string
-
-  @Field(() => String)
-  @isValidNumberString()
-  amount: string
-
-  @Field(() => String)
-  @isValidDateString()
-  createdAt: string
-
-  @Field(() => String)
-  @isValidDateString()
-  timeoutDate: string
-}
diff --git a/dlt-connector/src/graphql/input/UserAccountDraft.ts b/dlt-connector/src/graphql/input/UserAccountDraft.ts
deleted file mode 100644
index 9ae544e32..000000000
--- a/dlt-connector/src/graphql/input/UserAccountDraft.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-// https://www.npmjs.com/package/@apollo/protobufjs
-
-import { IsEnum, IsObject, ValidateNested } from 'class-validator'
-import { InputType, Field } from 'type-graphql'
-
-import { isValidDateString } from '@validator/DateString'
-
-import { AccountType } from '@/graphql/enum/AccountType'
-
-import { UserIdentifier } from './UserIdentifier'
-
-@InputType()
-export class UserAccountDraft {
-  @Field(() => UserIdentifier)
-  @IsObject()
-  @ValidateNested()
-  user: UserIdentifier
-
-  @Field(() => String)
-  @isValidDateString()
-  createdAt: string
-
-  @Field(() => AccountType)
-  @IsEnum(AccountType)
-  accountType: AccountType
-}
diff --git a/dlt-connector/src/graphql/input/UserIdentifier.ts b/dlt-connector/src/graphql/input/UserIdentifier.ts
index 7d9035b93..f622c24e4 100644
--- a/dlt-connector/src/graphql/input/UserIdentifier.ts
+++ b/dlt-connector/src/graphql/input/UserIdentifier.ts
@@ -1,19 +1,24 @@
 // https://www.npmjs.com/package/@apollo/protobufjs
 
-import { IsPositive, IsUUID } from 'class-validator'
-import { Field, Int, InputType } from 'type-graphql'
+import { IsObject, IsUUID, ValidateNested } from 'class-validator'
+import { Field, InputType } from 'type-graphql'
+
+import { CommunityUser } from './CommunityUser'
+import { IdentifierSeed } from './IdentifierSeed'
 
 @InputType()
 export class UserIdentifier {
-  @Field(() => String)
-  @IsUUID('4')
-  uuid: string
-
   @Field(() => String)
   @IsUUID('4')
   communityUuid: string
 
-  @Field(() => Int, { defaultValue: 1, nullable: true })
-  @IsPositive()
-  accountNr?: number
+  @Field(() => CommunityUser, { nullable: true })
+  @IsObject()
+  @ValidateNested()
+  communityUser?: CommunityUser
+
+  @Field(() => IdentifierSeed, { nullable: true })
+  @IsObject()
+  @ValidateNested()
+  seed?: IdentifierSeed
 }
diff --git a/dlt-connector/src/graphql/resolver/AccountsResolver.ts b/dlt-connector/src/graphql/resolver/AccountsResolver.ts
index a7f264764..ab7203285 100644
--- a/dlt-connector/src/graphql/resolver/AccountsResolver.ts
+++ b/dlt-connector/src/graphql/resolver/AccountsResolver.ts
@@ -1,15 +1,14 @@
 /* eslint-disable camelcase */
 import { AddressType_NONE } from 'gradido-blockchain-js'
-import { Arg, Mutation, Query, Resolver } from 'type-graphql'
+import { Arg, Query, Resolver } from 'type-graphql'
 
 import { getAddressType } from '@/client/GradidoNode'
 import { KeyPairCalculation } from '@/interactions/keyPairCalculation/KeyPairCalculation.context'
-import { SendToIotaContext } from '@/interactions/sendToIota/SendToIota.context'
 import { logger } from '@/logging/logger'
+import { KeyPairCacheManager } from '@/manager/KeyPairCacheManager'
 import { uuid4ToHash } from '@/utils/typeConverter'
 
 import { TransactionErrorType } from '../enum/TransactionErrorType'
-import { UserAccountDraft } from '../input/UserAccountDraft'
 import { UserIdentifier } from '../input/UserIdentifier'
 import { TransactionError } from '../model/TransactionError'
 import { TransactionResult } from '../model/TransactionResult'
@@ -25,6 +24,7 @@ export class AccountResolver {
         new TransactionError(TransactionErrorType.NOT_FOUND, 'cannot get user public key'),
       )
     }
+
     // ask gradido node server for account type, if type !== NONE account exist
     const addressType = await getAddressType(
       publicKey.data(),
@@ -33,21 +33,4 @@ export class AccountResolver {
     logger.info('isAccountExist', userIdentifier)
     return addressType !== AddressType_NONE
   }
-
-  @Mutation(() => TransactionResult)
-  async registerAddress(
-    @Arg('data')
-    userAccountDraft: UserAccountDraft,
-  ): Promise<TransactionResult> {
-    try {
-      return await SendToIotaContext(userAccountDraft)
-    } catch (err) {
-      if (err instanceof TransactionError) {
-        return new TransactionResult(err)
-      } else {
-        logger.error('error in register address: ', err)
-        throw err
-      }
-    }
-  }
 }
diff --git a/dlt-connector/src/graphql/resolver/TransactionsResolver.ts b/dlt-connector/src/graphql/resolver/TransactionsResolver.ts
index 8d3d5970b..e7d1c105e 100755
--- a/dlt-connector/src/graphql/resolver/TransactionsResolver.ts
+++ b/dlt-connector/src/graphql/resolver/TransactionsResolver.ts
@@ -1,4 +1,3 @@
-import { TransactionLinkDraft } from '@input/TransactionLinkDraft'
 import { Resolver, Arg, Mutation } from 'type-graphql'
 
 import { SendToIotaContext } from '@/interactions/sendToIota/SendToIota.context'
@@ -25,21 +24,4 @@ export class TransactionResolver {
       }
     }
   }
-
-  @Mutation(() => TransactionResult)
-  async deferredTransfer(
-    @Arg('data')
-    transactionLinkDraft: TransactionLinkDraft,
-  ): Promise<TransactionResult> {
-    try {
-      return await SendToIotaContext(transactionLinkDraft)
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-    } catch (error: any) {
-      if (error instanceof TransactionError) {
-        return new TransactionResult(error)
-      } else {
-        throw error
-      }
-    }
-  }
 }
diff --git a/dlt-connector/src/interactions/keyPairCalculation/KeyPairCalculation.context.ts b/dlt-connector/src/interactions/keyPairCalculation/KeyPairCalculation.context.ts
index ca54d8d16..3cb1f43cf 100644
--- a/dlt-connector/src/interactions/keyPairCalculation/KeyPairCalculation.context.ts
+++ b/dlt-connector/src/interactions/keyPairCalculation/KeyPairCalculation.context.ts
@@ -15,9 +15,7 @@ import { UserKeyPairRole } from './UserKeyPair.role'
  * @DCI-Context
  * Context for calculating key pair for signing transactions
  */
-export async function KeyPairCalculation(
-  input: UserIdentifier | string | IdentifierSeed,
-): Promise<KeyPairEd25519> {
+export async function KeyPairCalculation(input: UserIdentifier | string): Promise<KeyPairEd25519> {
   const cache = KeyPairCacheManager.getInstance()
 
   // Try cache lookup first
@@ -26,11 +24,9 @@ export async function KeyPairCalculation(
     return keyPair
   }
 
-  const retrieveKeyPair = async (
-    input: UserIdentifier | string | IdentifierSeed,
-  ): Promise<KeyPairEd25519> => {
-    if (input instanceof IdentifierSeed) {
-      return new LinkedTransactionKeyPairRole(input.seed).generateKeyPair()
+  const retrieveKeyPair = async (input: UserIdentifier | string): Promise<KeyPairEd25519> => {
+    if (input instanceof UserIdentifier && input.seed) {
+      return new LinkedTransactionKeyPairRole(input.seed.seed).generateKeyPair()
     }
 
     const communityUUID = input instanceof UserIdentifier ? input.communityUuid : input
@@ -51,7 +47,7 @@ export async function KeyPairCalculation(
     }
     if (input instanceof UserIdentifier) {
       const userKeyPair = new UserKeyPairRole(input, communityKeyPair).generateKeyPair()
-      const accountNr = input.accountNr ?? 1
+      const accountNr = input.communityUser?.accountNr ?? 1
       return new AccountKeyPairRole(accountNr, userKeyPair).generateKeyPair()
     }
     return communityKeyPair
diff --git a/dlt-connector/src/interactions/keyPairCalculation/RemoteAccountKeyPair.role.ts b/dlt-connector/src/interactions/keyPairCalculation/RemoteAccountKeyPair.role.ts
index 1cc9c9891..132e86499 100644
--- a/dlt-connector/src/interactions/keyPairCalculation/RemoteAccountKeyPair.role.ts
+++ b/dlt-connector/src/interactions/keyPairCalculation/RemoteAccountKeyPair.role.ts
@@ -13,7 +13,11 @@ export class RemoteAccountKeyPairRole extends AbstractRemoteKeyPairRole {
   }
 
   public async retrieveKeyPair(): Promise<KeyPairEd25519> {
-    const nameHash = uuid4ToHash(this.user.uuid)
+    if (!this.user.communityUser) {
+      throw new LogError('missing community user')
+    }
+
+    const nameHash = uuid4ToHash(this.user.communityUser.uuid)
     const confirmedTransactions = await getTransactions(
       0,
       30,
diff --git a/dlt-connector/src/interactions/keyPairCalculation/UserKeyPair.role.ts b/dlt-connector/src/interactions/keyPairCalculation/UserKeyPair.role.ts
index 473b203cd..6f433a7df 100644
--- a/dlt-connector/src/interactions/keyPairCalculation/UserKeyPair.role.ts
+++ b/dlt-connector/src/interactions/keyPairCalculation/UserKeyPair.role.ts
@@ -1,6 +1,7 @@
 import { KeyPairEd25519 } from 'gradido-blockchain-js'
 
 import { UserIdentifier } from '@/graphql/input/UserIdentifier'
+import { LogError } from '@/server/LogError'
 import { hardenDerivationIndex } from '@/utils/derivationHelper'
 import { uuid4ToBuffer } from '@/utils/typeConverter'
 
@@ -14,7 +15,10 @@ export class UserKeyPairRole extends AbstractKeyPairRole {
   public generateKeyPair(): KeyPairEd25519 {
     // example gradido id: 03857ac1-9cc2-483e-8a91-e5b10f5b8d16 =>
     // wholeHex: '03857ac19cc2483e8a91e5b10f5b8d16']
-    const wholeHex = uuid4ToBuffer(this.user.uuid)
+    if (!this.user.communityUser) {
+      throw new LogError('missing community user')
+    }
+    const wholeHex = uuid4ToBuffer(this.user.communityUser.uuid)
     const parts = []
     for (let i = 0; i < 4; i++) {
       parts[i] = hardenDerivationIndex(wholeHex.subarray(i * 4, (i + 1) * 4).readUInt32BE())
diff --git a/dlt-connector/src/interactions/sendToIota/CreationTransaction.role.ts b/dlt-connector/src/interactions/sendToIota/CreationTransaction.role.ts
index c448a1704..2865193a9 100644
--- a/dlt-connector/src/interactions/sendToIota/CreationTransaction.role.ts
+++ b/dlt-connector/src/interactions/sendToIota/CreationTransaction.role.ts
@@ -1,7 +1,8 @@
 import { GradidoTransactionBuilder, TransferAmount } from 'gradido-blockchain-js'
 
+import { TransactionErrorType } from '@/graphql/enum/TransactionErrorType'
 import { TransactionDraft } from '@/graphql/input/TransactionDraft'
-import { LogError } from '@/server/LogError'
+import { TransactionError } from '@/graphql/model/TransactionError'
 
 import { KeyPairCalculation } from '../keyPairCalculation/KeyPairCalculation.context'
 
@@ -17,12 +18,27 @@ export class CreationTransactionRole extends AbstractTransactionRole {
   }
 
   getRecipientCommunityUuid(): string {
-    throw new LogError('cannot be used as cross group transaction')
+    throw new TransactionError(
+      TransactionErrorType.LOGIC_ERROR,
+      'creation: cannot be used as cross group transaction',
+    )
   }
 
   public async getGradidoTransactionBuilder(): Promise<GradidoTransactionBuilder> {
     if (!this.self.targetDate) {
-      throw new LogError('target date missing for creation transaction')
+      throw new TransactionError(
+        TransactionErrorType.MISSING_PARAMETER,
+        'creation: target date missing',
+      )
+    }
+    if (!this.self.linkedUser) {
+      throw new TransactionError(
+        TransactionErrorType.MISSING_PARAMETER,
+        'creation: linked user missing',
+      )
+    }
+    if (!this.self.amount) {
+      throw new TransactionError(TransactionErrorType.MISSING_PARAMETER, 'creation: amount missing')
     }
     const builder = new GradidoTransactionBuilder()
     const recipientKeyPair = await KeyPairCalculation(this.self.user)
diff --git a/dlt-connector/src/interactions/sendToIota/DeferredTransferTransaction.role.ts b/dlt-connector/src/interactions/sendToIota/DeferredTransferTransaction.role.ts
index 7a4c627a1..511efa869 100644
--- a/dlt-connector/src/interactions/sendToIota/DeferredTransferTransaction.role.ts
+++ b/dlt-connector/src/interactions/sendToIota/DeferredTransferTransaction.role.ts
@@ -1,15 +1,15 @@
 import { GradidoTransactionBuilder, GradidoTransfer, TransferAmount } from 'gradido-blockchain-js'
 
-import { IdentifierSeed } from '@/graphql/input/IdentifierSeed'
-import { TransactionLinkDraft } from '@/graphql/input/TransactionLinkDraft'
-import { LogError } from '@/server/LogError'
+import { TransactionErrorType } from '@/graphql/enum/TransactionErrorType'
+import { TransactionDraft } from '@/graphql/input/TransactionDraft'
+import { TransactionError } from '@/graphql/model/TransactionError'
 
 import { KeyPairCalculation } from '../keyPairCalculation/KeyPairCalculation.context'
 
 import { AbstractTransactionRole } from './AbstractTransaction.role'
 
 export class DeferredTransferTransactionRole extends AbstractTransactionRole {
-  constructor(protected self: TransactionLinkDraft) {
+  constructor(protected self: TransactionDraft) {
     super()
   }
 
@@ -18,13 +18,34 @@ export class DeferredTransferTransactionRole extends AbstractTransactionRole {
   }
 
   getRecipientCommunityUuid(): string {
-    throw new LogError('cannot be used as cross group transaction')
+    throw new TransactionError(
+      TransactionErrorType.LOGIC_ERROR,
+      'deferred transfer: cannot be used as cross group transaction',
+    )
   }
 
   public async getGradidoTransactionBuilder(): Promise<GradidoTransactionBuilder> {
+    if (!this.self.linkedUser || !this.self.linkedUser.seed) {
+      throw new TransactionError(
+        TransactionErrorType.MISSING_PARAMETER,
+        'deferred transfer: missing linked user or not a seed',
+      )
+    }
+    if (!this.self.amount) {
+      throw new TransactionError(
+        TransactionErrorType.MISSING_PARAMETER,
+        'deferred transfer: amount missing',
+      )
+    }
+    if (!this.self.timeoutDate) {
+      throw new TransactionError(
+        TransactionErrorType.MISSING_PARAMETER,
+        'deferred transfer: timeout date missing',
+      )
+    }
     const builder = new GradidoTransactionBuilder()
     const senderKeyPair = await KeyPairCalculation(this.self.user)
-    const recipientKeyPair = await KeyPairCalculation(new IdentifierSeed(this.self.seed))
+    const recipientKeyPair = await KeyPairCalculation(this.self.linkedUser)
 
     builder
       .setCreatedAt(new Date(this.self.createdAt))
diff --git a/dlt-connector/src/interactions/sendToIota/RegisterAddressTransaction.role.ts b/dlt-connector/src/interactions/sendToIota/RegisterAddressTransaction.role.ts
index dc80d7c02..f8c82586d 100644
--- a/dlt-connector/src/interactions/sendToIota/RegisterAddressTransaction.role.ts
+++ b/dlt-connector/src/interactions/sendToIota/RegisterAddressTransaction.role.ts
@@ -1,7 +1,9 @@
 /* eslint-disable camelcase */
 import { GradidoTransactionBuilder } from 'gradido-blockchain-js'
 
-import { UserAccountDraft } from '@/graphql/input/UserAccountDraft'
+import { TransactionErrorType } from '@/graphql/enum/TransactionErrorType'
+import { TransactionDraft } from '@/graphql/input/TransactionDraft'
+import { TransactionError } from '@/graphql/model/TransactionError'
 import { LogError } from '@/server/LogError'
 import { accountTypeToAddressType, uuid4ToHash } from '@/utils/typeConverter'
 
@@ -10,7 +12,7 @@ import { KeyPairCalculation } from '../keyPairCalculation/KeyPairCalculation.con
 import { AbstractTransactionRole } from './AbstractTransaction.role'
 
 export class RegisterAddressTransactionRole extends AbstractTransactionRole {
-  constructor(private self: UserAccountDraft) {
+  constructor(private self: TransactionDraft) {
     super()
   }
 
@@ -23,6 +25,20 @@ export class RegisterAddressTransactionRole extends AbstractTransactionRole {
   }
 
   public async getGradidoTransactionBuilder(): Promise<GradidoTransactionBuilder> {
+    if (!this.self.accountType) {
+      throw new TransactionError(
+        TransactionErrorType.MISSING_PARAMETER,
+        'register address: account type missing',
+      )
+    }
+
+    if (!this.self.user.communityUser) {
+      throw new TransactionError(
+        TransactionErrorType.MISSING_PARAMETER,
+        "register address: user isn't a community user",
+      )
+    }
+
     const builder = new GradidoTransactionBuilder()
     const communityKeyPair = await KeyPairCalculation(this.self.user.communityUuid)
     const accountKeyPair = await KeyPairCalculation(this.self.user)
@@ -31,7 +47,7 @@ export class RegisterAddressTransactionRole extends AbstractTransactionRole {
       .setRegisterAddress(
         accountKeyPair.getPublicKey(),
         accountTypeToAddressType(this.self.accountType),
-        uuid4ToHash(this.self.user.uuid),
+        uuid4ToHash(this.self.user.communityUser.uuid),
       )
       .sign(communityKeyPair)
       .sign(accountKeyPair)
diff --git a/dlt-connector/src/interactions/sendToIota/SendToIota.context.ts b/dlt-connector/src/interactions/sendToIota/SendToIota.context.ts
index caf4df11f..be02eef55 100644
--- a/dlt-connector/src/interactions/sendToIota/SendToIota.context.ts
+++ b/dlt-connector/src/interactions/sendToIota/SendToIota.context.ts
@@ -12,8 +12,6 @@ import { InputTransactionType } from '@/graphql/enum/InputTransactionType'
 import { TransactionErrorType } from '@/graphql/enum/TransactionErrorType'
 import { CommunityDraft } from '@/graphql/input/CommunityDraft'
 import { TransactionDraft } from '@/graphql/input/TransactionDraft'
-import { TransactionLinkDraft } from '@/graphql/input/TransactionLinkDraft'
-import { UserAccountDraft } from '@/graphql/input/UserAccountDraft'
 import { TransactionError } from '@/graphql/model/TransactionError'
 import { TransactionRecipe } from '@/graphql/model/TransactionRecipe'
 import { TransactionResult } from '@/graphql/model/TransactionResult'
@@ -34,7 +32,7 @@ import { TransferTransactionRole } from './TransferTransaction.role'
  * send every transaction only once to iota!
  */
 export async function SendToIotaContext(
-  input: TransactionDraft | UserAccountDraft | CommunityDraft | TransactionLinkDraft,
+  input: TransactionDraft | CommunityDraft,
 ): Promise<TransactionResult> {
   const validate = (transaction: GradidoTransaction): void => {
     try {
@@ -76,17 +74,25 @@ export async function SendToIotaContext(
 
   let role: AbstractTransactionRole
   if (input instanceof TransactionDraft) {
-    if (input.type === InputTransactionType.CREATION) {
-      role = new CreationTransactionRole(input)
-    } else if (input.type === InputTransactionType.SEND) {
-      role = new TransferTransactionRole(input)
-    } else {
-      throw new LogError('not supported transaction type')
+    switch (input.type) {
+      case InputTransactionType.GRADIDO_CREATION:
+        role = new CreationTransactionRole(input)
+        break
+      case InputTransactionType.GRADIDO_TRANSFER:
+        role = new TransferTransactionRole(input)
+        break
+      case InputTransactionType.REGISTER_ADDRESS:
+        role = new RegisterAddressTransactionRole(input)
+        break
+      case InputTransactionType.GRADIDO_DEFERRED_TRANSFER:
+        role = new DeferredTransferTransactionRole(input)
+        break
+      default:
+        throw new TransactionError(
+          TransactionErrorType.NOT_IMPLEMENTED_YET,
+          'not supported transaction type: ' + input.type,
+        )
     }
-  } else if (input instanceof TransactionLinkDraft) {
-    role = new DeferredTransferTransactionRole(input)
-  } else if (input instanceof UserAccountDraft) {
-    role = new RegisterAddressTransactionRole(input)
   } else if (input instanceof CommunityDraft) {
     role = new CommunityRootTransactionRole(input)
   } else {
diff --git a/dlt-connector/src/interactions/sendToIota/TransferTransaction.role.ts b/dlt-connector/src/interactions/sendToIota/TransferTransaction.role.ts
index 1e5dde5dd..7a4cd7bb0 100644
--- a/dlt-connector/src/interactions/sendToIota/TransferTransaction.role.ts
+++ b/dlt-connector/src/interactions/sendToIota/TransferTransaction.role.ts
@@ -1,6 +1,9 @@
 import { GradidoTransactionBuilder, TransferAmount } from 'gradido-blockchain-js'
 
+import { TransactionErrorType } from '@/graphql/enum/TransactionErrorType'
 import { TransactionDraft } from '@/graphql/input/TransactionDraft'
+import { UserIdentifier } from '@/graphql/input/UserIdentifier'
+import { TransactionError } from '@/graphql/model/TransactionError'
 import { uuid4ToHash } from '@/utils/typeConverter'
 
 import { KeyPairCalculation } from '../keyPairCalculation/KeyPairCalculation.context'
@@ -8,8 +11,16 @@ import { KeyPairCalculation } from '../keyPairCalculation/KeyPairCalculation.con
 import { AbstractTransactionRole } from './AbstractTransaction.role'
 
 export class TransferTransactionRole extends AbstractTransactionRole {
-  constructor(protected self: TransactionDraft) {
+  private linkedUser: UserIdentifier
+  constructor(private self: TransactionDraft) {
     super()
+    if (!this.self.linkedUser) {
+      throw new TransactionError(
+        TransactionErrorType.MISSING_PARAMETER,
+        'transfer: linked user missing',
+      )
+    }
+    this.linkedUser = this.self.linkedUser
   }
 
   getSenderCommunityUuid(): string {
@@ -17,13 +28,16 @@ export class TransferTransactionRole extends AbstractTransactionRole {
   }
 
   getRecipientCommunityUuid(): string {
-    return this.self.linkedUser.communityUuid
+    return this.linkedUser.communityUuid
   }
 
   public async getGradidoTransactionBuilder(): Promise<GradidoTransactionBuilder> {
+    if (!this.self.amount) {
+      throw new TransactionError(TransactionErrorType.MISSING_PARAMETER, 'transfer: amount missing')
+    }
     const builder = new GradidoTransactionBuilder()
     const senderKeyPair = await KeyPairCalculation(this.self.user)
-    const recipientKeyPair = await KeyPairCalculation(this.self.linkedUser)
+    const recipientKeyPair = await KeyPairCalculation(this.linkedUser)
     builder
       .setCreatedAt(new Date(this.self.createdAt))
       .setMemo('dummy memo for transfer')
@@ -32,7 +46,7 @@ export class TransferTransactionRole extends AbstractTransactionRole {
         recipientKeyPair.getPublicKey(),
       )
     const senderCommunity = this.self.user.communityUuid
-    const recipientCommunity = this.self.linkedUser.communityUuid
+    const recipientCommunity = this.linkedUser.communityUuid
     if (senderCommunity !== recipientCommunity) {
       // we have a cross group transaction
       builder
diff --git a/dlt-connector/src/logging/CommunityUserLogging.view.ts b/dlt-connector/src/logging/CommunityUserLogging.view.ts
new file mode 100644
index 000000000..f1b421cd6
--- /dev/null
+++ b/dlt-connector/src/logging/CommunityUserLogging.view.ts
@@ -0,0 +1,17 @@
+import { CommunityUser } from '@/graphql/input/CommunityUser'
+
+import { AbstractLoggingView } from './AbstractLogging.view'
+
+export class CommunityUserLoggingView extends AbstractLoggingView {
+  public constructor(private self: CommunityUser) {
+    super()
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  public toJSON(): any {
+    return {
+      uuid: this.self.uuid,
+      accountNr: this.self.accountNr,
+    }
+  }
+}
diff --git a/dlt-connector/src/logging/IdentifierSeedLogging.view.ts b/dlt-connector/src/logging/IdentifierSeedLogging.view.ts
new file mode 100644
index 000000000..d34012e17
--- /dev/null
+++ b/dlt-connector/src/logging/IdentifierSeedLogging.view.ts
@@ -0,0 +1,16 @@
+import { IdentifierSeed } from '@/graphql/input/IdentifierSeed'
+
+import { AbstractLoggingView } from './AbstractLogging.view'
+
+export class IdentifierSeedLoggingView extends AbstractLoggingView {
+  public constructor(private self: IdentifierSeed) {
+    super()
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  public toJSON(): any {
+    return {
+      seed: this.self.seed,
+    }
+  }
+}
diff --git a/dlt-connector/src/logging/UserIdentifierLogging.view.ts b/dlt-connector/src/logging/UserIdentifierLogging.view.ts
index 54ac4b07d..16343551f 100644
--- a/dlt-connector/src/logging/UserIdentifierLogging.view.ts
+++ b/dlt-connector/src/logging/UserIdentifierLogging.view.ts
@@ -1,6 +1,8 @@
 import { UserIdentifier } from '@/graphql/input/UserIdentifier'
 
 import { AbstractLoggingView } from './AbstractLogging.view'
+import { CommunityUserLoggingView } from './CommunityUserLogging.view'
+import { IdentifierSeedLoggingView } from './IdentifierSeedLogging.view'
 
 export class UserIdentifierLoggingView extends AbstractLoggingView {
   public constructor(private self: UserIdentifier) {
@@ -10,9 +12,11 @@ export class UserIdentifierLoggingView extends AbstractLoggingView {
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   public toJSON(): any {
     return {
-      uuid: this.self.uuid,
       communityUuid: this.self.communityUuid,
-      accountNr: this.self.accountNr,
+      communityUser: this.self.communityUser
+        ? new CommunityUserLoggingView(this.self.communityUser).toJSON()
+        : undefined,
+      seed: this.self.seed ? new IdentifierSeedLoggingView(this.self.seed).toJSON() : undefined,
     }
   }
 }
diff --git a/dlt-connector/src/manager/KeyPairCacheManager.ts b/dlt-connector/src/manager/KeyPairCacheManager.ts
index 844f5ad58..5f5d94f41 100644
--- a/dlt-connector/src/manager/KeyPairCacheManager.ts
+++ b/dlt-connector/src/manager/KeyPairCacheManager.ts
@@ -45,14 +45,11 @@ export class KeyPairCacheManager {
     return this.homeCommunityUUID
   }
 
-  public findKeyPair(input: UserIdentifier | string | IdentifierSeed): KeyPairEd25519 | undefined {
+  public findKeyPair(input: UserIdentifier | string): KeyPairEd25519 | undefined {
     return this.cache.get(this.getKey(input))
   }
 
-  public addKeyPair(
-    input: UserIdentifier | string | IdentifierSeed,
-    keyPair: KeyPairEd25519,
-  ): void {
+  public addKeyPair(input: UserIdentifier | string, keyPair: KeyPairEd25519): void {
     const key = this.getKey(input)
     if (this.cache.has(key)) {
       throw new LogError('key already exist, cannot add', key)
@@ -60,13 +57,17 @@ export class KeyPairCacheManager {
     this.cache.set(key, keyPair)
   }
 
-  protected getKey(input: UserIdentifier | string | IdentifierSeed): string {
+  protected getKey(input: UserIdentifier | string): string {
     if (input instanceof UserIdentifier) {
-      return input.uuid
-    } else if (input instanceof IdentifierSeed) {
-      return input.seed
-    } else {
+      if (input.communityUser) {
+        return input.communityUser.uuid
+      } else if (input.seed) {
+        return input.seed.seed
+      }
+      throw new LogError('unhandled branch')
+    } else if (typeof input === 'string') {
       return input
     }
+    throw new LogError('unhandled input type')
   }
 }