diff --git a/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionLinkToDlt.role.ts b/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionLinkToDlt.role.ts
index a30d86f65..1b0ac97e6 100644
--- a/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionLinkToDlt.role.ts
+++ b/backend/src/apis/dltConnector/interaction/transactionToDlt/TransactionLinkToDlt.role.ts
@@ -14,10 +14,10 @@ import { AbstractTransactionToDltRole } from './AbstractTransactionToDlt.role'
 export class TransactionLinkToDltRole extends AbstractTransactionToDltRole<TransactionLink> {
   async initWithLast(): Promise<this> {
     this.self = await this.createQueryForPendingItems(
-      TransactionLink.createQueryBuilder().leftJoinAndSelect('transactionLink.user', 'user'),
+      TransactionLink.createQueryBuilder().leftJoinAndSelect('TransactionLink.user', 'user'),
       'TransactionLink.id = dltTransaction.transactionLinkId',
       // eslint-disable-next-line camelcase
-      { TransactionLinkId_created_at: 'ASC', User_id: 'ASC' },
+      { TransactionLink_createdAt: 'ASC', User_id: 'ASC' },
     )
     return this
   }
diff --git a/backend/src/apis/dltConnector/interaction/transactionToDlt/transactionToDlt.context.ts b/backend/src/apis/dltConnector/interaction/transactionToDlt/transactionToDlt.context.ts
index 57281f96b..9e56eee81 100644
--- a/backend/src/apis/dltConnector/interaction/transactionToDlt/transactionToDlt.context.ts
+++ b/backend/src/apis/dltConnector/interaction/transactionToDlt/transactionToDlt.context.ts
@@ -1,3 +1,4 @@
+import { EntityPropertyNotFoundError, QueryFailedError, TypeORMError } from '@dbTools/typeorm'
 import { Transaction } from '@entity/Transaction'
 import { TransactionLink } from '@entity/TransactionLink'
 import { User } from '@entity/User'
@@ -33,7 +34,6 @@ export async function transactionToDlt(dltConnector: DltConnectorClient): Promis
     })
     return results[0]
   }
-
   while (true) {
     const pendingTransactionRole = await findNextPendingTransaction()
     const pendingTransaction = pendingTransactionRole.getEntity()
@@ -54,9 +54,6 @@ export async function transactionToDlt(dltConnector: DltConnectorClient): Promis
         error = 'skipped'
       }
     } catch (e) {
-      if (e instanceof FetchError) {
-        throw e
-      }
       error = e instanceof Error ? e.message : String(e)
     }
 
diff --git a/backend/src/apis/dltConnector/sendTransactionsToDltConnector.ts b/backend/src/apis/dltConnector/sendTransactionsToDltConnector.ts
index 7e0abf0fa..98bbde864 100644
--- a/backend/src/apis/dltConnector/sendTransactionsToDltConnector.ts
+++ b/backend/src/apis/dltConnector/sendTransactionsToDltConnector.ts
@@ -1,5 +1,5 @@
 // eslint-disable-next-line import/no-extraneous-dependencies
-import { EntityPropertyNotFoundError } from '@dbTools/typeorm'
+import { TypeORMError } from '@dbTools/typeorm'
 // eslint-disable-next-line import/named, n/no-extraneous-import
 import { FetchError } from 'node-fetch'
 
@@ -43,9 +43,6 @@ export async function sendTransactionsToDltConnector(): Promise<void> {
         1000,
       )
     } catch (e) {
-      if (e instanceof EntityPropertyNotFoundError) {
-        throw new LogError(e.message, e.stack)
-      }
       // 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)}`)
@@ -54,7 +51,12 @@ export async function sendTransactionsToDltConnector(): Promise<void> {
           5000,
         )
       } else {
-        logger.error(`Error while sending to DLT-connector or writing messageId`, e)
+        if (e instanceof TypeORMError) {
+          // seems to be a error in code, so let better stop here
+          throw new LogError(e.message, e.stack)
+        } else {
+          logger.error(`Error while sending to DLT-connector or writing messageId`, e)
+        }
       }
     }
   }