diff --git a/dlt-connector/src/client/GradidoNode/input.schema.test.ts b/dlt-connector/src/client/GradidoNode/input.schema.test.ts
index 4db653f26..0b7b4dc71 100644
--- a/dlt-connector/src/client/GradidoNode/input.schema.test.ts
+++ b/dlt-connector/src/client/GradidoNode/input.schema.test.ts
@@ -48,7 +48,7 @@ describe('transactionIdentifierSchema ', () => {
         transactionId: 1,
         hieroTransactionId: '0.0.261-1755348116-1281621',
       }),
-    ).toThrowError(new Error('Invalid key: Expected "topic" but received undefined'))
+    ).toThrowError(new Error('Invalid key: Expected "communityId" but received undefined'))
   })
   it('invalid, transactionNr and iotaMessageId set', () => {
     expect(() =>
diff --git a/dlt-connector/src/interactions/resolveKeyPair/ResolveKeyPair.context.test.ts b/dlt-connector/src/interactions/resolveKeyPair/ResolveKeyPair.context.test.ts
index 16a444cd8..3541ae943 100644
--- a/dlt-connector/src/interactions/resolveKeyPair/ResolveKeyPair.context.test.ts
+++ b/dlt-connector/src/interactions/resolveKeyPair/ResolveKeyPair.context.test.ts
@@ -33,6 +33,7 @@ mock.module('../../config', () => ({
 }))
 
 const topicId = '0.0.21732'
+const communityId = '1e88a0f4-d4fc-4cae-a7e8-a88e613ce324'
 const userUuid = 'aa25cf6f-2879-4745-b2ea-6d3c37fb44b0'
 
 afterAll(() => {
@@ -45,7 +46,7 @@ describe('KeyPairCalculation', () => {
   })
   it('community key pair', async () => {
     const identifier = new KeyPairIdentifierLogic(
-      v.parse(identifierKeyPairSchema, { communityTopicId: topicId }),
+      v.parse(identifierKeyPairSchema, { communityId, communityTopicId: topicId }),
     )
     const keyPair = await ResolveKeyPair(identifier)
     expect(keyPair.getPublicKey()?.convertToHex()).toBe(
@@ -55,6 +56,7 @@ describe('KeyPairCalculation', () => {
   it('user key pair', async () => {
     const identifier = new KeyPairIdentifierLogic(
       v.parse(identifierKeyPairSchema, {
+        communityId,
         communityTopicId: topicId,
         account: { userUuid },
       }),
@@ -70,6 +72,7 @@ describe('KeyPairCalculation', () => {
   it('account key pair', async () => {
     const identifier = new KeyPairIdentifierLogic(
       v.parse(identifierKeyPairSchema, {
+        communityId,
         communityTopicId: topicId,
         account: { userUuid, accountNr: 1 },
       }),
diff --git a/dlt-connector/src/interactions/sendToHiero/RegisterAddressTransaction.role.test.ts b/dlt-connector/src/interactions/sendToHiero/RegisterAddressTransaction.role.test.ts
index ab07a2f83..c12694797 100644
--- a/dlt-connector/src/interactions/sendToHiero/RegisterAddressTransaction.role.test.ts
+++ b/dlt-connector/src/interactions/sendToHiero/RegisterAddressTransaction.role.test.ts
@@ -4,11 +4,14 @@ import * as v from 'valibot'
 import { transactionSchema } from '../../schemas/transaction.schema'
 import { hieroIdSchema } from '../../schemas/typeGuard.schema'
 import { RegisterAddressTransactionRole } from './RegisterAddressTransaction.role'
+import { InMemoryBlockchainProvider } from 'gradido-blockchain-js'
 
 const userUuid = '408780b2-59b3-402a-94be-56a4f4f4e8ec'
+const communityId = '1e88a0f4-d4fc-4cae-a7e8-a88e613ce324'
 const transaction = {
   user: {
     communityTopicId: '0.0.21732',
+    communityId,
     account: {
       userUuid,
       accountNr: 0,
@@ -18,6 +21,8 @@ const transaction = {
   accountType: 'COMMUNITY_HUMAN',
   createdAt: '2022-01-01T00:00:00.000Z',
 }
+// create blockchain in native module
+InMemoryBlockchainProvider.getInstance().getBlockchain(communityId)
 
 describe('RegisterAddressTransaction.role', () => {
   it('get correct prepared builder', async () => {
diff --git a/dlt-connector/src/schemas/transaction.schema.test.ts b/dlt-connector/src/schemas/transaction.schema.test.ts
index e8a6a3b3c..de2692632 100644
--- a/dlt-connector/src/schemas/transaction.schema.test.ts
+++ b/dlt-connector/src/schemas/transaction.schema.test.ts
@@ -35,7 +35,7 @@ const transactionLinkCode = (date: Date): string => {
 let topic: HieroId
 const topicString = '0.0.261'
 let communityUuid: Uuidv4
-const communityUuidString = '123e4567-e89b-12d3-a456-426614174000'
+const communityUuidString = 'fcd48487-6d31-4f4c-be9b-b3c8ca853912'
 
 beforeAll(() => {
   topic = v.parse(hieroIdSchema, topicString)
diff --git a/dlt-connector/src/schemas/typeConverter.schema.test.ts b/dlt-connector/src/schemas/typeConverter.schema.test.ts
index a46341599..75dc0f1fe 100644
--- a/dlt-connector/src/schemas/typeConverter.schema.test.ts
+++ b/dlt-connector/src/schemas/typeConverter.schema.test.ts
@@ -2,7 +2,7 @@
 import { describe, expect, it } from 'bun:test'
 import { TypeCompiler } from '@sinclair/typebox/compiler'
 import { Static, TypeBoxFromValibot } from '@sinclair/typemap'
-import { AddressType_COMMUNITY_AUF } from 'gradido-blockchain-js'
+import { AddressType_COMMUNITY_AUF, InMemoryBlockchainProvider } from 'gradido-blockchain-js'
 import * as v from 'valibot'
 import { AccountType } from '../data/AccountType.enum'
 import {
@@ -96,9 +96,15 @@ describe('basic.schema', () => {
   })
 
   it('confirmedTransactionSchema', () => {
+    // create blockchain in native module
+    const communityId = 'fcd48487-6d31-4f4c-be9b-b3c8ca853912'
+    InMemoryBlockchainProvider.getInstance().getBlockchain(communityId)
     const confirmedTransaction = v.parse(
       confirmedTransactionSchema,
-      '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',
+      {
+        base64: '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',
+        communityId,
+      },
     )
     expect(confirmedTransaction.getId()).toBe(7)
     expect(confirmedTransaction.getConfirmedAt().getSeconds()).toBe(1609464130)
diff --git a/dlt-connector/src/schemas/typeGuard.schema.test.ts b/dlt-connector/src/schemas/typeGuard.schema.test.ts
index ecd9eca7a..52e05c76e 100644
--- a/dlt-connector/src/schemas/typeGuard.schema.test.ts
+++ b/dlt-connector/src/schemas/typeGuard.schema.test.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from 'bun:test'
 import { v4 as uuidv4 } from 'uuid'
 import * as v from 'valibot'
-import { memoSchema, uuidv4Schema } from './typeGuard.schema'
+import { memoSchema, MEMO_MAX_CHARS, MEMO_MIN_CHARS, uuidv4Schema } from './typeGuard.schema'
 
 describe('typeGuard.schema', () => {
   describe('Uuidv4', () => {
@@ -20,18 +20,18 @@ describe('typeGuard.schema', () => {
         expect(memoValueParsed.toString()).toBe(memoValue)
       })
       it('max length', () => {
-        const memoValue = 's'.repeat(255)
+        const memoValue = 's'.repeat(MEMO_MAX_CHARS)
         const memoValueParsed = v.parse(memoSchema, memoValue)
         expect(memoValueParsed.toString()).toBe(memoValue)
       })
       it('to short', () => {
         const memoValue = 'memo'
-        expect(() => v.parse(memoSchema, memoValue)).toThrow(new Error('expect string length >= 5'))
+        expect(() => v.parse(memoSchema, memoValue)).toThrow(new Error(`expect string length >= ${MEMO_MIN_CHARS}`))
       })
       it('to long', () => {
-        const memoValue = 's'.repeat(256)
+        const memoValue = 's'.repeat(MEMO_MAX_CHARS + 1)
         expect(() => v.parse(memoSchema, memoValue)).toThrow(
-          new Error('expect string length <= 255'),
+          new Error(`expect string length <= ${MEMO_MAX_CHARS}`),
         )
       })
     })
diff --git a/dlt-connector/src/server/index.test.ts b/dlt-connector/src/server/index.test.ts
index 4b6b8be76..72419de0d 100644
--- a/dlt-connector/src/server/index.test.ts
+++ b/dlt-connector/src/server/index.test.ts
@@ -5,6 +5,7 @@ import * as v from 'valibot'
 import { KeyPairCacheManager } from '../cache/KeyPairCacheManager'
 import { HieroId, hieroIdSchema } from '../schemas/typeGuard.schema'
 import { appRoutes } from '.'
+import { InMemoryBlockchainProvider } from 'gradido-blockchain-js'
 
 const userUuid = '408780b2-59b3-402a-94be-56a4f4f4e8ec'
 
@@ -55,9 +56,13 @@ beforeAll(() => {
 
 describe('Server', () => {
   it('send register address transaction', async () => {
+    // create blockchain in native module
+    const communityId = '1e88a0f4-d4fc-4cae-a7e8-a88e613ce324'
+    InMemoryBlockchainProvider.getInstance().getBlockchain(communityId)
     const transaction = {
       user: {
         communityTopicId: '0.0.21732',
+        communityId,
         account: {
           userUuid,
           accountNr: 0,