diff --git a/backend/src/auth/jwt/JWT.ts b/backend/src/auth/jwt/JWT.ts
index f36dd10fc..c3d7b1d26 100644
--- a/backend/src/auth/jwt/JWT.ts
+++ b/backend/src/auth/jwt/JWT.ts
@@ -1,6 +1,7 @@
 import { SignJWT, jwtVerify } from 'jose'
 
 import { LogError } from '@/server/LogError'
+import { backendLogger as logger } from '@/server/logger'
 
 import { JwtPayloadType } from './payloadtypes/JwtPayloadType'
 
@@ -13,6 +14,7 @@ export const decode = async (token: string, signkey: Buffer): Promise<JwtPayload
       issuer: 'urn:gradido:issuer',
       audience: 'urn:gradido:audience',
     })
+    logger.debug('JWT.decode after jwtVerify... payload=', payload)
     return payload as unknown as JwtPayloadType
   } catch (err) {
     return null
diff --git a/backend/src/graphql/resolver/TransactionLinkResolver.ts b/backend/src/graphql/resolver/TransactionLinkResolver.ts
index 80040a68c..c5c040eea 100644
--- a/backend/src/graphql/resolver/TransactionLinkResolver.ts
+++ b/backend/src/graphql/resolver/TransactionLinkResolver.ts
@@ -162,6 +162,10 @@ export class TransactionLinkResolver {
       }
       // normal redeem code
       if (txLinkFound) {
+        logger.debug(
+          'TransactionLinkResolver.queryTransactionLink... normal redeem code found=',
+          txLinkFound,
+        )
         const user = await DbUser.findOneOrFail({ where: { id: dbTransactionLink.userId } })
         let redeemedBy
         if (dbTransactionLink.redeemedBy) {
@@ -173,9 +177,13 @@ export class TransactionLinkResolver {
         return new TransactionLink(dbTransactionLink, new User(user), redeemedBy, communities)
       } else {
         // disbursement jwt-token
+        logger.debug(
+          'TransactionLinkResolver.queryTransactionLink... disbursement jwt-token found=',
+        )
         // eslint-disable-next-line @typescript-eslint/no-unsafe-call, @typescript-eslint/no-unsafe-assignment
         const homeCom = await getHomeCommunity()
         const jwtPayload = await decode(code, homeCom.publicKey)
+        logger.debug('TransactionLinkResolver.queryTransactionLink... jwtPayload=', jwtPayload)
         if (jwtPayload !== null && jwtPayload instanceof DisbursementJwtPayloadType) {
           const disburseJwtPayload: DisbursementJwtPayloadType = jwtPayload
           transactionLink.communityName = homeCom.name !== null ? homeCom.name : 'unknown'