diff --git a/admin/src/graphql/adminCreateContributionMessage.js b/admin/src/graphql/adminCreateContributionMessage.js
index 25d81f151..747e6d7d4 100644
--- a/admin/src/graphql/adminCreateContributionMessage.js
+++ b/admin/src/graphql/adminCreateContributionMessage.js
@@ -1,7 +1,7 @@
 import gql from 'graphql-tag'
 
 export const adminCreateContributionMessage = gql`
-  mutation ($contributionId: Float!, $message: String!) {
+  mutation ($contributionId: Int!, $message: String!) {
     adminCreateContributionMessage(contributionId: $contributionId, message: $message) {
       id
       message
diff --git a/admin/src/graphql/listContributionMessages.js b/admin/src/graphql/listContributionMessages.js
index c3ffdb0b9..a311598e2 100644
--- a/admin/src/graphql/listContributionMessages.js
+++ b/admin/src/graphql/listContributionMessages.js
@@ -1,7 +1,7 @@
 import gql from 'graphql-tag'
 
 export const listContributionMessages = gql`
-  query ($contributionId: Float!, $pageSize: Int = 25, $currentPage: Int = 1, $order: Order = ASC) {
+  query ($contributionId: Int!, $pageSize: Int = 25, $currentPage: Int = 1, $order: Order = ASC) {
     listContributionMessages(
       contributionId: $contributionId
       pageSize: $pageSize
diff --git a/backend/src/federation/validateCommunities.test.ts b/backend/src/federation/validateCommunities.test.ts
index bf9093b16..599564ea6 100644
--- a/backend/src/federation/validateCommunities.test.ts
+++ b/backend/src/federation/validateCommunities.test.ts
@@ -154,7 +154,8 @@ describe('validate Communities', () => {
       })
       it('logs unsupported api for community with api 2_0 ', () => {
         expect(logger.warn).toBeCalledWith(
-          `Federation: dbCom: ${dbCom.id} with unsupported apiVersion=2_0; supported versions=1_0,1_1`,
+          `Federation: dbCom: ${dbCom.id} with unsupported apiVersion=2_0; supported versions`,
+          ['1_0', '1_1'],
         )
       })
     })
diff --git a/backend/src/graphql/arg/ContributionMessageArgs.ts b/backend/src/graphql/arg/ContributionMessageArgs.ts
index 0e573bd36..8b44756a6 100644
--- a/backend/src/graphql/arg/ContributionMessageArgs.ts
+++ b/backend/src/graphql/arg/ContributionMessageArgs.ts
@@ -1,9 +1,9 @@
-import { ArgsType, Field, ID, InputType } from 'type-graphql'
+import { ArgsType, Field, Int, InputType } from 'type-graphql'
 
 @InputType()
 @ArgsType()
 export default class ContributionMessageArgs {
-  @Field(() => ID)
+  @Field(() => Int)
   contributionId: number
 
   @Field(() => String)
diff --git a/backend/src/graphql/model/Community.ts b/backend/src/graphql/model/Community.ts
index bf8784be2..0cd1926f5 100644
--- a/backend/src/graphql/model/Community.ts
+++ b/backend/src/graphql/model/Community.ts
@@ -2,7 +2,7 @@
 /* eslint-disable @typescript-eslint/no-unsafe-assignment */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
-import { ObjectType, Field, ID } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 
 @ObjectType()
 export class Community {
@@ -16,7 +16,7 @@ export class Community {
     }
   }
 
-  @Field(() => ID)
+  @Field(() => Int)
   id: number
 
   @Field(() => String)
diff --git a/backend/src/graphql/model/Contribution.ts b/backend/src/graphql/model/Contribution.ts
index 4345a79a6..59c156cad 100644
--- a/backend/src/graphql/model/Contribution.ts
+++ b/backend/src/graphql/model/Contribution.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field, Int, ID } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import Decimal from 'decimal.js-light'
 import { Contribution as dbContribution } from '@entity/Contribution'
 import { User } from '@entity/User'
@@ -23,7 +23,7 @@ export class Contribution {
     this.deletedBy = contribution.deletedBy
   }
 
-  @Field(() => ID)
+  @Field(() => Int)
   id: number
 
   @Field(() => String, { nullable: true })
@@ -44,13 +44,13 @@ export class Contribution {
   @Field(() => Date, { nullable: true })
   confirmedAt: Date | null
 
-  @Field(() => ID, { nullable: true })
+  @Field(() => Int, { nullable: true })
   confirmedBy: number | null
 
   @Field(() => Date, { nullable: true })
   deniedAt: Date | null
 
-  @Field(() => ID, { nullable: true })
+  @Field(() => Int, { nullable: true })
   deniedBy: number | null
 
   @Field(() => Date, { nullable: true })
diff --git a/backend/src/graphql/model/ContributionLink.ts b/backend/src/graphql/model/ContributionLink.ts
index 0a81db38d..7a06f8dff 100644
--- a/backend/src/graphql/model/ContributionLink.ts
+++ b/backend/src/graphql/model/ContributionLink.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field, Int, ID } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import Decimal from 'decimal.js-light'
 import { ContributionLink as dbContributionLink } from '@entity/ContributionLink'
 import CONFIG from '@/config'
@@ -21,7 +21,7 @@ export class ContributionLink {
     this.link = CONFIG.COMMUNITY_REDEEM_CONTRIBUTION_URL.replace(/{code}/g, this.code)
   }
 
-  @Field(() => ID)
+  @Field(() => Int)
   id: number
 
   @Field(() => Decimal)
diff --git a/backend/src/graphql/model/ContributionMessage.ts b/backend/src/graphql/model/ContributionMessage.ts
index bdcfc093d..6bd6a4715 100644
--- a/backend/src/graphql/model/ContributionMessage.ts
+++ b/backend/src/graphql/model/ContributionMessage.ts
@@ -1,4 +1,4 @@
-import { Field, ID, Int, ObjectType } from 'type-graphql'
+import { Field, Int, ObjectType } from 'type-graphql'
 import { ContributionMessage as DbContributionMessage } from '@entity/ContributionMessage'
 import { User } from '@entity/User'
 
@@ -16,7 +16,7 @@ export class ContributionMessage {
     this.isModerator = contributionMessage.isModerator
   }
 
-  @Field(() => ID)
+  @Field(() => Int)
   id: number
 
   @Field(() => String)
@@ -37,7 +37,7 @@ export class ContributionMessage {
   @Field(() => String, { nullable: true })
   userLastName: string | null
 
-  @Field(() => ID, { nullable: true })
+  @Field(() => Int, { nullable: true })
   userId: number | null
 
   @Field(() => Boolean)
diff --git a/backend/src/graphql/model/GdtEntry.ts b/backend/src/graphql/model/GdtEntry.ts
index 01fb308ae..bbf1cceef 100644
--- a/backend/src/graphql/model/GdtEntry.ts
+++ b/backend/src/graphql/model/GdtEntry.ts
@@ -2,7 +2,7 @@
 /* eslint-disable @typescript-eslint/no-unsafe-assignment */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
-import { ObjectType, Field, Float, ID } from 'type-graphql'
+import { ObjectType, Field, Float, Int } from 'type-graphql'
 import { GdtEntryType } from '@enum/GdtEntryType'
 
 @ObjectType()
@@ -21,7 +21,7 @@ export class GdtEntry {
     this.gdt = json.gdt
   }
 
-  @Field(() => ID)
+  @Field(() => Int)
   id: number
 
   @Field(() => Float)
diff --git a/backend/src/graphql/model/Transaction.ts b/backend/src/graphql/model/Transaction.ts
index 6f480000b..96b80f9a0 100644
--- a/backend/src/graphql/model/Transaction.ts
+++ b/backend/src/graphql/model/Transaction.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field, ID } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import { Decay } from './Decay'
 import { Transaction as dbTransaction } from '@entity/Transaction'
 import Decimal from 'decimal.js-light'
@@ -47,13 +47,13 @@ export class Transaction {
       : transaction.transactionLinkId || null
   }
 
-  @Field(() => ID)
+  @Field(() => Int)
   id: number
 
   @Field(() => User)
   user: User
 
-  @Field(() => ID, { nullable: true })
+  @Field(() => Int, { nullable: true })
   previous: number | null
 
   @Field(() => TransactionTypeId)
@@ -80,10 +80,10 @@ export class Transaction {
   @Field(() => User, { nullable: true })
   linkedUser: User | null
 
-  @Field(() => ID, { nullable: true })
+  @Field(() => Int, { nullable: true })
   linkedTransactionId: number | null
 
   // Links to the TransactionLink/ContributionLink when transaction was created by a link
-  @Field(() => ID, { nullable: true })
+  @Field(() => Int, { nullable: true })
   linkId: number | null
 }
diff --git a/backend/src/graphql/model/TransactionLink.ts b/backend/src/graphql/model/TransactionLink.ts
index 4c10c79d8..b0a8ab184 100644
--- a/backend/src/graphql/model/TransactionLink.ts
+++ b/backend/src/graphql/model/TransactionLink.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field, Int, ID } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import Decimal from 'decimal.js-light'
 import { TransactionLink as dbTransactionLink } from '@entity/TransactionLink'
 import { User } from './User'
@@ -21,7 +21,7 @@ export class TransactionLink {
     this.link = CONFIG.COMMUNITY_REDEEM_URL.replace(/{code}/g, this.code)
   }
 
-  @Field(() => ID)
+  @Field(() => Int)
   id: number
 
   @Field(() => User)
diff --git a/backend/src/graphql/model/UnconfirmedContribution.ts b/backend/src/graphql/model/UnconfirmedContribution.ts
index 068505594..75112ecf5 100644
--- a/backend/src/graphql/model/UnconfirmedContribution.ts
+++ b/backend/src/graphql/model/UnconfirmedContribution.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field, Int, ID } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import Decimal from 'decimal.js-light'
 import { Contribution } from '@entity/Contribution'
 import { User } from '@entity/User'
@@ -29,7 +29,7 @@ export class UnconfirmedContribution {
   @Field(() => String)
   lastName: string
 
-  @Field(() => ID)
+  @Field(() => Int)
   userId: number
 
   @Field(() => String)
@@ -44,7 +44,7 @@ export class UnconfirmedContribution {
   @Field(() => Decimal)
   amount: Decimal
 
-  @Field(() => ID, { nullable: true })
+  @Field(() => Int, { nullable: true })
   moderator: number | null
 
   @Field(() => [Decimal])
diff --git a/backend/src/graphql/model/User.ts b/backend/src/graphql/model/User.ts
index bf973d047..aeb764941 100644
--- a/backend/src/graphql/model/User.ts
+++ b/backend/src/graphql/model/User.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field, ID, Int } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import { KlickTipp } from './KlickTipp'
 import { User as dbUser } from '@entity/User'
 import { UserContact } from './UserContact'
@@ -28,7 +28,7 @@ export class User {
     this.hideAmountGDT = user.hideAmountGDT
   }
 
-  @Field(() => ID)
+  @Field(() => Int)
   id: number
 
   @Field(() => String)
@@ -37,7 +37,7 @@ export class User {
   @Field(() => String, { nullable: true })
   alias: string | null
 
-  @Field(() => ID, { nullable: true })
+  @Field(() => Int, { nullable: true })
   emailId: number | null
 
   // TODO privacy issue here
diff --git a/backend/src/graphql/model/UserAdmin.ts b/backend/src/graphql/model/UserAdmin.ts
index e4e3a8315..e7330471b 100644
--- a/backend/src/graphql/model/UserAdmin.ts
+++ b/backend/src/graphql/model/UserAdmin.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field, Int, ID } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import Decimal from 'decimal.js-light'
 import { User } from '@entity/User'
 
@@ -17,7 +17,7 @@ export class UserAdmin {
     this.isAdmin = user.isAdmin
   }
 
-  @Field(() => ID)
+  @Field(() => Int)
   userId: number
 
   @Field(() => String)
diff --git a/backend/src/graphql/model/UserContact.ts b/backend/src/graphql/model/UserContact.ts
index b62e746a2..bb31d0745 100644
--- a/backend/src/graphql/model/UserContact.ts
+++ b/backend/src/graphql/model/UserContact.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field, ID, Int } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import { UserContact as dbUserContact } from '@entity/UserContact'
 
 @ObjectType()
@@ -18,13 +18,13 @@ export class UserContact {
     this.deletedAt = userContact.deletedAt
   }
 
-  @Field(() => ID)
+  @Field(() => Int)
   id: number
 
   @Field(() => String)
   type: string
 
-  @Field(() => ID)
+  @Field(() => Int)
   userId: number
 
   @Field(() => String)
diff --git a/backend/src/graphql/resolver/ContributionMessageResolver.ts b/backend/src/graphql/resolver/ContributionMessageResolver.ts
index c35008ae9..e9258490e 100644
--- a/backend/src/graphql/resolver/ContributionMessageResolver.ts
+++ b/backend/src/graphql/resolver/ContributionMessageResolver.ts
@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/restrict-template-expressions */
-import { Arg, Args, Authorized, Ctx, ID, Mutation, Query, Resolver } from 'type-graphql'
+import { Arg, Args, Authorized, Ctx, Int, Mutation, Query, Resolver } from 'type-graphql'
 import { getConnection } from '@dbTools/typeorm'
 
 import { ContributionMessage as DbContributionMessage } from '@entity/ContributionMessage'
@@ -69,7 +69,7 @@ export class ContributionMessageResolver {
   @Authorized([RIGHTS.LIST_ALL_CONTRIBUTION_MESSAGES])
   @Query(() => ContributionMessageListResult)
   async listContributionMessages(
-    @Arg('contributionId', () => ID) contributionId: number,
+    @Arg('contributionId', () => Int) contributionId: number,
     @Args()
     { currentPage = 1, pageSize = 5, order = Order.DESC }: Paginated,
   ): Promise<ContributionMessageListResult> {
diff --git a/backend/src/graphql/resolver/ContributionResolver.test.ts b/backend/src/graphql/resolver/ContributionResolver.test.ts
index dc31282cb..477bc2a5e 100644
--- a/backend/src/graphql/resolver/ContributionResolver.test.ts
+++ b/backend/src/graphql/resolver/ContributionResolver.test.ts
@@ -2024,7 +2024,7 @@ describe('ContributionResolver', () => {
                 ).resolves.toEqual(
                   expect.objectContaining({
                     data: {
-                      adminCreateContribution: [1000, 1000, 590],
+                      adminCreateContribution: ['1000', '1000', '590'],
                     },
                   }),
                 )
diff --git a/backend/src/graphql/resolver/TransactionResolver.test.ts b/backend/src/graphql/resolver/TransactionResolver.test.ts
index 5f3c71bd3..c660a72da 100644
--- a/backend/src/graphql/resolver/TransactionResolver.test.ts
+++ b/backend/src/graphql/resolver/TransactionResolver.test.ts
@@ -328,7 +328,7 @@ describe('send coins', () => {
         ).toEqual(
           expect.objectContaining({
             data: {
-              sendCoins: 'true',
+              sendCoins: true,
             },
           }),
         )
@@ -383,7 +383,7 @@ describe('send coins', () => {
         ).resolves.toEqual(
           expect.objectContaining({
             data: {
-              sendCoins: 'true',
+              sendCoins: true,
             },
           }),
         )
@@ -399,7 +399,7 @@ describe('send coins', () => {
         ).resolves.toEqual(
           expect.objectContaining({
             data: {
-              sendCoins: 'true',
+              sendCoins: true,
             },
           }),
         )
@@ -415,7 +415,7 @@ describe('send coins', () => {
         ).resolves.toEqual(
           expect.objectContaining({
             data: {
-              sendCoins: 'true',
+              sendCoins: true,
             },
           }),
         )
@@ -431,7 +431,7 @@ describe('send coins', () => {
         ).resolves.toEqual(
           expect.objectContaining({
             data: {
-              sendCoins: 'true',
+              sendCoins: true,
             },
           }),
         )
diff --git a/backend/src/graphql/resolver/UserResolver.test.ts b/backend/src/graphql/resolver/UserResolver.test.ts
index 0e613a4aa..a57346583 100644
--- a/backend/src/graphql/resolver/UserResolver.test.ts
+++ b/backend/src/graphql/resolver/UserResolver.test.ts
@@ -288,7 +288,7 @@ describe('UserResolver', () => {
     })
 
     describe('no publisher id', () => {
-      it('sets publisher id to null', async () => {
+      it('sets publisher id to 0', async () => {
         await mutate({
           mutation: createUser,
           variables: { ...variables, email: 'raeuber@hotzenplotz.de', publisherId: undefined },
@@ -299,7 +299,7 @@ describe('UserResolver', () => {
               emailContact: expect.objectContaining({
                 email: 'raeuber@hotzenplotz.de',
               }),
-              publisherId: null,
+              publisherId: 0,
             }),
           ]),
         )
@@ -854,7 +854,7 @@ describe('UserResolver', () => {
       it('returns true', async () => {
         await expect(mutate({ mutation: logout })).resolves.toEqual(
           expect.objectContaining({
-            data: { logout: 'true' },
+            data: { logout: true },
             errors: undefined,
           }),
         )
diff --git a/backend/src/seeds/graphql/mutations.ts b/backend/src/seeds/graphql/mutations.ts
index 79684d378..69d6d16d8 100644
--- a/backend/src/seeds/graphql/mutations.ts
+++ b/backend/src/seeds/graphql/mutations.ts
@@ -269,7 +269,7 @@ export const denyContribution = gql`
 `
 
 export const createContributionMessage = gql`
-  mutation ($contributionId: Float!, $message: String!) {
+  mutation ($contributionId: Int!, $message: String!) {
     createContributionMessage(contributionId: $contributionId, message: $message) {
       id
       message
@@ -283,7 +283,7 @@ export const createContributionMessage = gql`
 `
 
 export const adminCreateContributionMessage = gql`
-  mutation ($contributionId: Float!, $message: String!) {
+  mutation ($contributionId: Int!, $message: String!) {
     adminCreateContributionMessage(contributionId: $contributionId, message: $message) {
       id
       message
diff --git a/backend/src/seeds/graphql/queries.ts b/backend/src/seeds/graphql/queries.ts
index 6e2e58c67..299a0103d 100644
--- a/backend/src/seeds/graphql/queries.ts
+++ b/backend/src/seeds/graphql/queries.ts
@@ -301,7 +301,7 @@ export const searchAdminUsers = gql`
 `
 
 export const listContributionMessages = gql`
-  query ($contributionId: Float!, $pageSize: Int = 25, $currentPage: Int = 1, $order: Order = ASC) {
+  query ($contributionId: Int!, $pageSize: Int = 25, $currentPage: Int = 1, $order: Order = ASC) {
     listContributionMessages(
       contributionId: $contributionId
       pageSize: $pageSize
diff --git a/frontend/src/graphql/mutations.js b/frontend/src/graphql/mutations.js
index 111eb7ab5..55858b09b 100644
--- a/frontend/src/graphql/mutations.js
+++ b/frontend/src/graphql/mutations.js
@@ -128,7 +128,7 @@ export const deleteContribution = gql`
 `
 
 export const createContributionMessage = gql`
-  mutation($contributionId: Float!, $message: String!) {
+  mutation($contributionId: Int!, $message: String!) {
     createContributionMessage(contributionId: $contributionId, message: $message) {
       id
       message