diff --git a/backend/package.json b/backend/package.json
index ba45225a2..beb460fee 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -61,6 +61,7 @@
     "@types/jest": "^27.0.2",
     "@types/lodash.clonedeep": "^4.5.6",
     "@types/node": "^16.10.3",
+    "@types/node-fetch": "^2.6.11",
     "@types/nodemailer": "^6.4.4",
     "@types/sodium-native": "^2.3.5",
     "@types/uuid": "^8.3.4",
diff --git a/backend/src/apis/dltConnector/DltConnectorClient.ts b/backend/src/apis/dltConnector/DltConnectorClient.ts
index 75e9b2544..3402e0844 100644
--- a/backend/src/apis/dltConnector/DltConnectorClient.ts
+++ b/backend/src/apis/dltConnector/DltConnectorClient.ts
@@ -1,16 +1,17 @@
 import { Transaction as DbTransaction } from '@entity/Transaction'
 import { User } from '@entity/User'
 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'
 
-import { AccountType } from './enum/AccountType'
+import { TransactionDraft } from './model/TransactionDraft'
 import { TransactionResult } from './model/TransactionResult'
 import { UserAccountDraft } from './model/UserAccountDraft'
-import { UserIdentifier } from './model/UserIdentifier'
 
 const sendTransaction = gql`
   mutation ($input: TransactionDraft!) {
@@ -46,17 +47,6 @@ const registerAddress = gql`
   }
 `
 
-// from ChatGPT
-function getTransactionTypeString(id: TransactionTypeId): string {
-  const key = Object.keys(TransactionTypeId).find(
-    (key) => TransactionTypeId[key as keyof typeof TransactionTypeId] === id,
-  )
-  if (key === undefined) {
-    throw new LogError('invalid transaction type id: ' + id.toString())
-  }
-  return key
-}
-
 // Source: https://refactoring.guru/design-patterns/singleton/typescript/example
 // and ../federation/client/FederationClientFactory.ts
 /**
@@ -109,92 +99,74 @@ export class DltConnectorClient {
     return DltConnectorClient.instance
   }
 
+  private getTransactionParams(input: DbTransaction | User): TransactionDraft | UserAccountDraft {
+    if (input instanceof DbTransaction) {
+      return new TransactionDraft(input)
+    } else if (input instanceof User) {
+      return new UserAccountDraft(input)
+    }
+    throw new LogError('transaction should be either Transaction or User Entity')
+  }
+
+  private handleTransactionResult(result: TransactionResult) {
+    if (result.error) {
+      throw new Error(result.error.message)
+    }
+    return result
+  }
+
+  private async sendTransaction(input: TransactionDraft) {
+    const {
+      data: { sendTransaction: result },
+    } = await this.client.rawRequest<{ sendTransaction: TransactionResult }>(sendTransaction, {
+      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(
-    transaction: DbTransaction,
+    transaction: DbTransaction | User,
   ): Promise<TransactionResult | undefined> {
     // we don't need the receive transactions, there contain basically the same data as the send transactions
-    if ((transaction.typeId as TransactionTypeId) === TransactionTypeId.RECEIVE) {
+    if (
+      transaction instanceof DbTransaction &&
+      (transaction.typeId as TransactionTypeId) === TransactionTypeId.RECEIVE
+    ) {
       return
     }
-    const typeString = getTransactionTypeString(transaction.typeId)
-    // no negative values in dlt connector, gradido concept don't use negative values so the code don't use it too
-    const amountString = transaction.amount.abs().toString()
-    const params = {
-      input: {
-        user: {
-          uuid: transaction.userGradidoID,
-          communityUuid: transaction.userCommunityUuid,
-        } as UserIdentifier,
-        linkedUser: {
-          uuid: transaction.linkedUserGradidoID,
-          communityUuid: transaction.linkedUserCommunityUuid,
-        } as UserIdentifier,
-        amount: amountString,
-        type: typeString,
-        createdAt: transaction.balanceDate.toISOString(),
-        targetDate: transaction.creationDate?.toISOString(),
-      },
-    }
+
+    const input = this.getTransactionParams(transaction)
     try {
-      // TODO: add account nr for user after they have also more than one account in backend
-      logger.debug('transmit transaction to dlt connector', params)
-      const {
-        data: { sendTransaction: result },
-      } = await this.client.rawRequest<{ sendTransaction: TransactionResult }>(
-        sendTransaction,
-        params,
-      )
-      if (result.error) {
-        throw new Error(result.error.message)
+      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 {
+        throw new LogError('unhandled branch reached')
       }
-      console.log(result)
-      return result
     } catch (e) {
-      if (e instanceof Error) {
+      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)
       }
     }
   }
-
-  public async registerAddress(dbUser: User): Promise<TransactionResult | undefined> {
-    const params = {
-      input: {
-        user: {
-          uuid: dbUser.gradidoID,
-          communityUuid: dbUser.communityUuid,
-          accountNr: 1,
-        } as UserIdentifier,
-        createdAt: dbUser.createdAt.toISOString(),
-        accountType: AccountType.COMMUNITY_HUMAN,
-      } as UserAccountDraft,
-    }
-    try {
-      const {
-        data: { registerAddress: result },
-      } = await this.client.rawRequest<{ registerAddress: TransactionResult }>(
-        registerAddress,
-        params,
-      )
-      logger.info('send register address transaction to dlt-connector', {
-        params,
-        result,
-      })
-      if (result.error) {
-        throw new Error(result.error.message)
-      }
-      return result
-    } catch (e) {
-      if (e instanceof Error) {
-        throw new LogError(`from dlt-connector: ${e.message}`)
-      } else {
-        throw new LogError('Exception sending register address transaction to dlt-connector', e)
-      }
-    }
-  }
 }
diff --git a/backend/src/apis/dltConnector/model/TransactionDraft.ts b/backend/src/apis/dltConnector/model/TransactionDraft.ts
new file mode 100755
index 000000000..e6b8f8d6d
--- /dev/null
+++ b/backend/src/apis/dltConnector/model/TransactionDraft.ts
@@ -0,0 +1,38 @@
+// https://www.npmjs.com/package/@apollo/protobufjs
+import { Transaction } from '@entity/Transaction'
+
+import { TransactionTypeId } from '@/graphql/enum/TransactionTypeId'
+import { LogError } from '@/server/LogError'
+
+import { UserIdentifier } from './UserIdentifier'
+
+export class TransactionDraft {
+  user: UserIdentifier
+  linkedUser: UserIdentifier
+  amount: string
+  type: string
+  createdAt: string
+  // only for creation transactions
+  targetDate?: string
+
+  constructor(transaction: Transaction) {
+    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.amount = transaction.amount.abs().toString()
+    this.type = TransactionTypeId[transaction.typeId]
+    this.createdAt = transaction.balanceDate.toISOString()
+    this.targetDate = transaction.creationDate?.toISOString()
+  }
+}
diff --git a/backend/src/apis/dltConnector/model/UserAccountDraft.ts b/backend/src/apis/dltConnector/model/UserAccountDraft.ts
index f4aff4cb4..dc52065d1 100644
--- a/backend/src/apis/dltConnector/model/UserAccountDraft.ts
+++ b/backend/src/apis/dltConnector/model/UserAccountDraft.ts
@@ -1,9 +1,17 @@
+import { User } from '@entity/User'
+
 import { AccountType } from '@/apis/dltConnector/enum/AccountType'
 
 import { UserIdentifier } from './UserIdentifier'
 
-export interface UserAccountDraft {
+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 e265593be..1824d17f3 100644
--- a/backend/src/apis/dltConnector/model/UserIdentifier.ts
+++ b/backend/src/apis/dltConnector/model/UserIdentifier.ts
@@ -1,5 +1,11 @@
-export interface UserIdentifier {
+export class UserIdentifier {
   uuid: string
   communityUuid: string
   accountNr?: number
+
+  constructor(uuid: string, communityUuid: string, accountNr?: number) {
+    this.uuid = uuid
+    this.communityUuid = communityUuid
+    this.accountNr = accountNr
+  }
 }
diff --git a/backend/src/tasks/sendTransactionsToDltConnector.test.ts b/backend/src/apis/dltConnector/sendTransactionsToDltConnector.test.ts
similarity index 100%
rename from backend/src/tasks/sendTransactionsToDltConnector.test.ts
rename to backend/src/apis/dltConnector/sendTransactionsToDltConnector.test.ts
diff --git a/backend/src/apis/dltConnector/sendTransactionsToDltConnector.ts b/backend/src/apis/dltConnector/sendTransactionsToDltConnector.ts
new file mode 100644
index 000000000..36974b5cf
--- /dev/null
+++ b/backend/src/apis/dltConnector/sendTransactionsToDltConnector.ts
@@ -0,0 +1,142 @@
+import { DltTransaction } from '@entity/DltTransaction'
+import { DltUser } from '@entity/DltUser'
+import { Transaction } from '@entity/Transaction'
+import { User } from '@entity/User'
+// eslint-disable-next-line import/named, n/no-extraneous-import
+import { FetchError } from 'node-fetch'
+
+import { DltConnectorClient } from '@dltConnector/DltConnectorClient'
+
+import { TransactionResult } from '@/apis/dltConnector/model/TransactionResult'
+import { backendLogger as logger } from '@/server/logger'
+import {
+  InterruptiveSleepManager,
+  TRANSMIT_TO_IOTA_INTERRUPTIVE_SLEEP_KEY,
+} from '@/util/InterruptiveSleepManager'
+
+let isLoopRunning = true
+
+export const stopSendTransactionsToDltConnector = (): void => {
+  isLoopRunning = false
+}
+
+function logTransactionResult(
+  type: 'dltUser' | 'dltTransaction',
+  data: { id: number; messageId: string; error: string | null },
+): void {
+  if (data.error) {
+    logger.error(`Store ${type} with error: id=${data.id}, error=${data.error}`)
+  } else {
+    logger.info(`Store ${type}: messageId=${data.messageId}, id=${data.id}`)
+  }
+}
+
+async function saveTransactionResult(
+  pendingTransaction: User | Transaction,
+  messageId: string,
+  error: string | null,
+): Promise<void> {
+  if (pendingTransaction instanceof User) {
+    const dltUser = DltUser.create()
+    dltUser.userId = pendingTransaction.id
+    dltUser.messageId = messageId
+    dltUser.error = error
+    await DltUser.save(dltUser)
+    logTransactionResult('dltUser', dltUser)
+  } else if (pendingTransaction instanceof Transaction) {
+    const dltTransaction = DltTransaction.create()
+    dltTransaction.transactionId = pendingTransaction.id
+    dltTransaction.messageId = messageId
+    dltTransaction.error = error
+    await DltTransaction.save(dltTransaction)
+    logTransactionResult('dltTransaction', dltTransaction)
+  }
+}
+
+async function findNextPendingTransaction(): Promise<Transaction | User | null> {
+  const lastTransactionPromise: Promise<Transaction | null> = Transaction.createQueryBuilder()
+    .leftJoin(DltTransaction, 'dltTransaction', 'Transaction.id = dltTransaction.transactionId')
+    .where('dltTransaction.transaction_id IS NULL')
+    // eslint-disable-next-line camelcase
+    .orderBy({ balance_date: 'ASC', Transaction_id: 'ASC' })
+    .limit(1)
+    .getOne()
+
+  const lastUserPromise: Promise<User | null> = User.createQueryBuilder()
+    .leftJoin(DltUser, 'dltUser', 'User.id = dltUser.userId')
+    .where('dltUser.user_id IS NULL')
+    // eslint-disable-next-line camelcase
+    .orderBy({ User_created_at: 'ASC', User_id: 'ASC' })
+    .limit(1)
+    .getOne()
+
+  const results = await Promise.all([lastTransactionPromise, lastUserPromise])
+  if (results[0] && results[1]) {
+    return results[0].balanceDate < results[1].createdAt ? results[0] : results[1]
+  } else if (results[0]) {
+    return results[0]
+  } else if (results[1]) {
+    return results[1]
+  }
+  return null
+}
+
+async function processPendingTransactions(dltConnector: DltConnectorClient): Promise<void> {
+  let pendingTransaction: Transaction | User | null = null
+  while ((pendingTransaction = await findNextPendingTransaction())) {
+    let result: TransactionResult | undefined
+    let messageId = ''
+    let error: string | null = null
+
+    try {
+      result = await dltConnector.transmitTransaction(pendingTransaction)
+      if (result?.succeed && result.recipe) {
+        messageId = result.recipe.messageIdHex
+      } else {
+        error = 'skipped'
+      }
+    } catch (e) {
+      if (e instanceof FetchError) {
+        throw e
+      }
+      error = e instanceof Error ? e.message : String(e)
+    }
+
+    await saveTransactionResult(pendingTransaction, messageId, error)
+  }
+}
+
+export async function sendTransactionsToDltConnector(): Promise<void> {
+  const dltConnector = DltConnectorClient.getInstance()
+
+  if (!dltConnector) {
+    logger.info('Sending to DltConnector currently not configured...')
+    isLoopRunning = false
+    return
+  }
+
+  logger.info('Starting sendTransactionsToDltConnector task')
+
+  // eslint-disable-next-line no-unmodified-loop-condition
+  while (isLoopRunning) {
+    try {
+      // return after no pending transactions are left
+      await processPendingTransactions(dltConnector)
+      await InterruptiveSleepManager.getInstance().sleep(
+        TRANSMIT_TO_IOTA_INTERRUPTIVE_SLEEP_KEY,
+        1000,
+      )
+    } catch (e) {
+      // couldn't connect to dlt-connector? We wait
+      if (e instanceof FetchError) {
+        logger.error(`error connecting dlt-connector, wait 5 seconds before retry: ${String(e)}`)
+        await InterruptiveSleepManager.getInstance().sleep(
+          TRANSMIT_TO_IOTA_INTERRUPTIVE_SLEEP_KEY,
+          5000,
+        )
+      } else {
+        logger.error(`Error while sending to DLT-connector or writing messageId`, e)
+      }
+    }
+  }
+}
diff --git a/backend/src/graphql/resolver/TransactionLinkResolver.ts b/backend/src/graphql/resolver/TransactionLinkResolver.ts
index 0ef7f0586..8a5c92cf4 100644
--- a/backend/src/graphql/resolver/TransactionLinkResolver.ts
+++ b/backend/src/graphql/resolver/TransactionLinkResolver.ts
@@ -38,7 +38,7 @@ import { TRANSACTIONS_LOCK } from '@/util/TRANSACTIONS_LOCK'
 import { fullName } from '@/util/utilities'
 import { calculateBalance } from '@/util/validate'
 
-import { sendTransactionsToDltConnector } from '../../tasks/sendTransactionsToDltConnector'
+import { sendTransactionsToDltConnector } from '../../apis/dltConnector/sendTransactionsToDltConnector'
 
 import { executeTransaction } from './TransactionResolver'
 import { getUserCreation, validateContribution } from './util/creations'
diff --git a/backend/src/index.ts b/backend/src/index.ts
index 5cb3574e4..dd166d3d5 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -1,7 +1,7 @@
 import { CONFIG } from './config'
 import { startValidateCommunities } from './federation/validateCommunities'
 import { createServer } from './server/createServer'
-import { sendTransactionsToDltConnector } from './tasks/sendTransactionsToDltConnector'
+import { sendTransactionsToDltConnector } from './apis/dltConnector/sendTransactionsToDltConnector'
 
 async function main() {
   const { app } = await createServer()
diff --git a/backend/src/tasks/sendTransactionsToDltConnector.ts b/backend/src/tasks/sendTransactionsToDltConnector.ts
deleted file mode 100644
index 62c7c5ad7..000000000
--- a/backend/src/tasks/sendTransactionsToDltConnector.ts
+++ /dev/null
@@ -1,129 +0,0 @@
-import { DltTransaction } from '@entity/DltTransaction'
-import { DltUser } from '@entity/DltUser'
-import { Transaction } from '@entity/Transaction'
-import { User } from '@entity/User'
-
-import { DltConnectorClient } from '@dltConnector/DltConnectorClient'
-
-import { backendLogger as logger } from '@/server/logger'
-import {
-  InterruptiveSleepManager,
-  TRANSMIT_TO_IOTA_INTERRUPTIVE_SLEEP_KEY,
-} from '@/util/InterruptiveSleepManager'
-
-let running = true
-
-export const stopSendTransactionsToDltConnector = (): void => {
-  running = false
-}
-
-export async function sendTransactionsToDltConnector(): Promise<void> {
-  const dltConnector = DltConnectorClient.getInstance()
-  if (!dltConnector) {
-    logger.info('sending to DltConnector currently not configured...')
-    running = false
-    return
-  }
-  logger.info('start sendTransactionsToDltConnector task')
-
-  // eslint-disable-next-line no-unmodified-loop-condition
-  while (running) {
-    try {
-      // loop while work could be found
-      while (true) {
-        const pendingTransaction = await findNextPendingTransaction()
-        if (pendingTransaction instanceof User) {
-          const dltUser = DltUser.create()
-          dltUser.userId = pendingTransaction.id
-          try {
-            const result = await dltConnector.registerAddress(pendingTransaction)
-            if (result?.succeed && result.recipe) {
-              dltUser.messageId = result.recipe.messageIdHex
-            }
-          } catch (e) {
-            if (e instanceof Error) {
-              dltUser.error = e.message
-            } else if (typeof e === 'string') {
-              dltUser.error = e
-            }
-          }
-          // wait until saved, necessary before next call to findNextPendingTransaction
-          await DltUser.save(dltUser)
-          if (dltUser.messageId) {
-            logger.info('store dltUser: messageId=%s, id=%d', dltUser.messageId, dltUser.id)
-          } else {
-            logger.error('store dltUser with error: id=%d, error=%s', dltUser.id, dltUser.error)
-          }
-        } else if (pendingTransaction instanceof Transaction) {
-          const dltTransaction = DltTransaction.create()
-          dltTransaction.transactionId = pendingTransaction.id
-          try {
-            const result = await dltConnector.transmitTransaction(pendingTransaction)
-            if (result?.succeed && result.recipe) {
-              dltTransaction.messageId = result.recipe.messageIdHex
-            } else {
-              dltTransaction.error = 'skipped'
-            }
-          } catch (e) {
-            if (e instanceof Error) {
-              dltTransaction.error = e.message
-            } else if (typeof e === 'string') {
-              dltTransaction.error = e
-            }
-          }
-          // wait until saved, necessary before next call to findNextPendingTransaction
-          await DltTransaction.save(dltTransaction)
-          if (dltTransaction.messageId) {
-            logger.info(
-              'store dltTransaction: messageId=%s, id=%d',
-              dltTransaction.messageId,
-              dltTransaction.id,
-            )
-          } else {
-            logger.error(
-              'store dltTransaction with error: id=%d, error=%s',
-              dltTransaction.id,
-              dltTransaction.error,
-            )
-          }
-        } else {
-          break
-        }
-      }
-      await InterruptiveSleepManager.getInstance().sleep(
-        TRANSMIT_TO_IOTA_INTERRUPTIVE_SLEEP_KEY,
-        1000,
-      )
-    } catch (e) {
-      logger.error(`error while sending to dlt-connector or writing messageId`, e)
-    }
-  }
-}
-
-async function findNextPendingTransaction(): Promise<Transaction | User | null> {
-  const lastTransactionPromise: Promise<Transaction | null> = Transaction.createQueryBuilder()
-    .leftJoin(DltTransaction, 'dltTransaction', 'Transaction.id = dltTransaction.transactionId')
-    .where('dltTransaction.transaction_id IS NULL')
-    // eslint-disable-next-line camelcase
-    .orderBy({ balance_date: 'ASC', Transaction_id: 'ASC' })
-    .limit(1)
-    .getOne()
-
-  const lastUserPromise: Promise<User | null> = User.createQueryBuilder()
-    .leftJoin(DltUser, 'dltUser', 'User.id = dltUser.userId')
-    .where('dltUser.user_id IS NULL')
-    // eslint-disable-next-line camelcase
-    .orderBy({ User_created_at: 'ASC', User_id: 'ASC' })
-    .limit(1)
-    .getOne()
-
-  const results = await Promise.all([lastTransactionPromise, lastUserPromise])
-  if (results[0] && results[1]) {
-    return results[0].balanceDate < results[1].createdAt ? results[0] : results[1]
-  } else if (results[0]) {
-    return results[0]
-  } else if (results[1]) {
-    return results[1]
-  }
-  return null
-}
diff --git a/backend/yarn.lock b/backend/yarn.lock
index 5c33b1ce8..9e32b7d8c 100644
--- a/backend/yarn.lock
+++ b/backend/yarn.lock
@@ -1126,6 +1126,14 @@
   dependencies:
     "@types/node" "*"
 
+"@types/node-fetch@^2.6.11":
+  version "2.6.11"
+  resolved "https://registry.yarnpkg.com/@types/node-fetch/-/node-fetch-2.6.11.tgz#9b39b78665dae0e82a08f02f4967d62c66f95d24"
+  integrity sha512-24xFj9R5+rfQJLRyM56qh+wnVSYhyXC2tkoBndtY0U+vubqNsYXGjufB2nn8Q6gt0LrARwL6UBtMCSVCwl4B1g==
+  dependencies:
+    "@types/node" "*"
+    form-data "^4.0.0"
+
 "@types/node@*", "@types/node@^16.10.3":
   version "16.10.3"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-16.10.3.tgz#7a8f2838603ea314d1d22bb3171d899e15c57bd5"
@@ -3417,6 +3425,15 @@ form-data@^3.0.0:
     combined-stream "^1.0.8"
     mime-types "^2.1.12"
 
+form-data@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/form-data/-/form-data-4.0.1.tgz#ba1076daaaa5bfd7e99c1a6cb02aa0a5cff90d48"
+  integrity sha512-tzN8e4TX8+kkxGPK8D5u0FNmjPUjw3lwC9lSLxxoB/+GtsJG91CO8bSWy73APlgAZzZbXEYZJuxjkHH2w+Ezhw==
+  dependencies:
+    asynckit "^0.4.0"
+    combined-stream "^1.0.8"
+    mime-types "^2.1.12"
+
 forwarded@0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/forwarded/-/forwarded-0.2.0.tgz#2269936428aad4c15c7ebe9779a84bf0b2a81811"
diff --git a/dlt-connector/src/graphql/input/TransactionDraft.ts b/dlt-connector/src/graphql/input/TransactionDraft.ts
index d1fa48c3c..3f1f57a85 100755
--- a/dlt-connector/src/graphql/input/TransactionDraft.ts
+++ b/dlt-connector/src/graphql/input/TransactionDraft.ts
@@ -1,9 +1,10 @@
 // https://www.npmjs.com/package/@apollo/protobufjs
-import { InputTransactionType } from '@enum/InputTransactionType'
-import { isValidDateString, isValidNumberString } from '@validator/DateString'
 import { IsEnum, IsObject, ValidateNested } from 'class-validator'
 import { InputType, Field } from 'type-graphql'
 
+import { InputTransactionType } from '@enum/InputTransactionType'
+import { isValidDateString, isValidNumberString } from '@validator/DateString'
+
 import { UserIdentifier } from './UserIdentifier'
 
 @InputType()
diff --git a/dlt-connector/src/graphql/input/UserAccountDraft.ts b/dlt-connector/src/graphql/input/UserAccountDraft.ts
index e10be9574..9ae544e32 100644
--- a/dlt-connector/src/graphql/input/UserAccountDraft.ts
+++ b/dlt-connector/src/graphql/input/UserAccountDraft.ts
@@ -1,9 +1,10 @@
 // https://www.npmjs.com/package/@apollo/protobufjs
 
-import { isValidDateString } from '@validator/DateString'
 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'
diff --git a/dlt-connector/src/graphql/model/TransactionResult.ts b/dlt-connector/src/graphql/model/TransactionResult.ts
index 370c9827d..346920310 100644
--- a/dlt-connector/src/graphql/model/TransactionResult.ts
+++ b/dlt-connector/src/graphql/model/TransactionResult.ts
@@ -19,7 +19,7 @@ export class TransactionResult {
   @Field(() => TransactionError, { nullable: true })
   error?: TransactionError
 
-  // if no error happend, the message id of the iota transaction
+  // if no error happened, the message id of the iota transaction
   @Field(() => TransactionRecipe, { nullable: true })
   recipe?: TransactionRecipe
 
diff --git a/dlt-connector/src/graphql/resolver/TransactionsResolver.ts b/dlt-connector/src/graphql/resolver/TransactionsResolver.ts
index 50636dee3..e5e537ad9 100755
--- a/dlt-connector/src/graphql/resolver/TransactionsResolver.ts
+++ b/dlt-connector/src/graphql/resolver/TransactionsResolver.ts
@@ -1,6 +1,7 @@
-import { TransactionDraft } from '@input/TransactionDraft'
 import { Resolver, Arg, Mutation } from 'type-graphql'
 
+import { TransactionDraft } from '@input/TransactionDraft'
+
 import { SendToIotaContext } from '@/interactions/sendToIota/SendToIota.context'
 
 import { TransactionError } from '../model/TransactionError'
diff --git a/dlt-connector/src/graphql/validator/DateString.ts b/dlt-connector/src/graphql/validator/DateString.ts
index 2be057194..0445c1bbe 100644
--- a/dlt-connector/src/graphql/validator/DateString.ts
+++ b/dlt-connector/src/graphql/validator/DateString.ts
@@ -38,4 +38,4 @@ export function isValidNumberString(validationOptions?: ValidationOptions) {
       },
     })
   }
-}
\ No newline at end of file
+}
diff --git a/dlt-connector/src/interactions/keyPairCalculation/KeyPairCalculation.context.ts b/dlt-connector/src/interactions/keyPairCalculation/KeyPairCalculation.context.ts
index 8e6466df5..012168bb0 100644
--- a/dlt-connector/src/interactions/keyPairCalculation/KeyPairCalculation.context.ts
+++ b/dlt-connector/src/interactions/keyPairCalculation/KeyPairCalculation.context.ts
@@ -12,7 +12,7 @@ import { UserKeyPairRole } from './UserKeyPair.role'
 
 /**
  * @DCI-Context
- * Context for calculating key pair for signing transactions 
+ * Context for calculating key pair for signing transactions
  */
 export async function KeyPairCalculation(input: UserIdentifier | string): Promise<KeyPairEd25519> {
   const cache = KeyPairCacheManager.getInstance()
diff --git a/dlt-connector/yarn.lock b/dlt-connector/yarn.lock
index c4f244816..1f60d65f2 100644
--- a/dlt-connector/yarn.lock
+++ b/dlt-connector/yarn.lock
@@ -1082,7 +1082,7 @@
   resolved "https://registry.yarnpkg.com/@types/mime/-/mime-1.3.5.tgz#1ef302e01cf7d2b5a0fa526790c9123bf1d06690"
   integrity sha512-/pyBZWSLD2n0dcHE3hq8s8ZvcETHtEuF+3E7XVt0Ig2nvsVQXdghHVcEkIWjy9A0wKfTn97a/PSDYohKIlnP/w==
 
-"@types/node-fetch@^2.6.1":
+"@types/node-fetch@^2.6.1", "@types/node-fetch@^2.6.11":
   version "2.6.11"
   resolved "https://registry.yarnpkg.com/@types/node-fetch/-/node-fetch-2.6.11.tgz#9b39b78665dae0e82a08f02f4967d62c66f95d24"
   integrity sha512-24xFj9R5+rfQJLRyM56qh+wnVSYhyXC2tkoBndtY0U+vubqNsYXGjufB2nn8Q6gt0LrARwL6UBtMCSVCwl4B1g==
@@ -2112,6 +2112,11 @@ cssstyle@^2.3.0:
   dependencies:
     cssom "~0.3.6"
 
+data-uri-to-buffer@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/data-uri-to-buffer/-/data-uri-to-buffer-4.0.1.tgz#d8feb2b2881e6a4f58c2e08acfd0e2834e26222e"
+  integrity sha512-0R9ikRb668HB7QDxT1vkpuUBtqc53YyAwMwGeUFKRojY/NWKvdZ+9UYtRfGmhqNbRkTSVpMbmyhXipFFv2cb/A==
+
 data-urls@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/data-urls/-/data-urls-2.0.0.tgz#156485a72963a970f5d5821aaf642bef2bf2db9b"
@@ -2931,6 +2936,14 @@ fb-watchman@^2.0.0:
   dependencies:
     bser "2.1.1"
 
+fetch-blob@^3.1.2, fetch-blob@^3.1.4:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/fetch-blob/-/fetch-blob-3.2.0.tgz#f09b8d4bbd45adc6f0c20b7e787e793e309dcce9"
+  integrity sha512-7yAQpD2UMJzLi1Dqv7qFYnPbaPx7ZfFK6PiIxQ4PfkGPyNyl2Ugx+a/umUonmKqjhM4DnfbMvdX6otXq83soQQ==
+  dependencies:
+    node-domexception "^1.0.0"
+    web-streams-polyfill "^3.0.3"
+
 figures@^3.0.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/figures/-/figures-3.2.0.tgz#625c18bd293c604dc4a8ddb2febf0c88341746af"
@@ -3050,6 +3063,13 @@ form-data@^4.0.0:
     combined-stream "^1.0.8"
     mime-types "^2.1.12"
 
+formdata-polyfill@^4.0.10:
+  version "4.0.10"
+  resolved "https://registry.yarnpkg.com/formdata-polyfill/-/formdata-polyfill-4.0.10.tgz#24807c31c9d402e002ab3d8c720144ceb8848423"
+  integrity sha512-buewHzMvYL29jdeQTVILecSaZKnt/RJWjoZCF5OW60Z67/GmSLBkOFM7qh1PI3zFNtJbaZL5eQu1vLfazOwj4g==
+  dependencies:
+    fetch-blob "^3.1.2"
+
 forwarded@0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/forwarded/-/forwarded-0.2.0.tgz#2269936428aad4c15c7ebe9779a84bf0b2a81811"
@@ -4670,6 +4690,11 @@ node-api-headers@^1.1.0:
   resolved "https://registry.yarnpkg.com/node-api-headers/-/node-api-headers-1.3.0.tgz#bb32c6b3e33fb0004bd93c66787bf00998c834ea"
   integrity sha512-8Bviwtw4jNhv0B2qDjj4M5e6GyAuGtxsmZTrFJu3S3Z0+oHwIgSUdIKkKJmZd+EbMo7g3v4PLBbrjxwmZOqMBg==
 
+node-domexception@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/node-domexception/-/node-domexception-1.0.0.tgz#6888db46a1f71c0b76b3f7555016b63fe64766e5"
+  integrity sha512-/jKZoMpw0F8GRwl4/eLROPA3cfcXtLApP0QzLmUT/HuPCZWyB7IY9ZrMeKw2O/nFIqPQB3PVM9aYm0F312AXDQ==
+
 node-fetch@^2.6.12, node-fetch@^2.6.7:
   version "2.7.0"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.7.0.tgz#d0f0fa6e3e2dc1d27efcd8ad99d550bda94d187d"
@@ -4677,6 +4702,15 @@ node-fetch@^2.6.12, node-fetch@^2.6.7:
   dependencies:
     whatwg-url "^5.0.0"
 
+node-fetch@^3.3.2:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-3.3.2.tgz#d1e889bacdf733b4ff3b2b243eb7a12866a0b78b"
+  integrity sha512-dRB78srN/l6gqWulah9SrxeYnxeddIG30+GOqK/9OlLVyLg3HPnr6SqOWTWOXKRwC2eGYCkZ59NNuSgvSrpgOA==
+  dependencies:
+    data-uri-to-buffer "^4.0.0"
+    fetch-blob "^3.1.4"
+    formdata-polyfill "^4.0.10"
+
 node-gyp-build@^4.8.1:
   version "4.8.2"
   resolved "https://registry.yarnpkg.com/node-gyp-build/-/node-gyp-build-4.8.2.tgz#4f802b71c1ab2ca16af830e6c1ea7dd1ad9496fa"
@@ -6265,6 +6299,11 @@ walker@^1.0.7:
   dependencies:
     makeerror "1.0.12"
 
+web-streams-polyfill@^3.0.3:
+  version "3.3.3"
+  resolved "https://registry.yarnpkg.com/web-streams-polyfill/-/web-streams-polyfill-3.3.3.tgz#2073b91a2fdb1fbfbd401e7de0ac9f8214cecb4b"
+  integrity sha512-d2JWLCivmZYTSIoge9MsgFCZrt571BikcWGYkjC1khllbTeDlGqZ2D8vD8E/lJa8WGWbb7Plm8/XJYV7IJHZZw==
+
 webidl-conversions@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"