How To Fix CNV_PE_POST823 - Releasing a transfer job impossible due to parallel lock on job table

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_POST -

• Message number: 823

• Message text: Releasing a transfer job impossible due to parallel lock on job table

What causes this issue?

Trying to schedule the transfer jobs for area <ZH>&V1&</> failed. There
is already an object lock on the central job table.
In general, this issue only means that in parallel another task is
currently releasing further transfer jobs.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Try again later.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_POST823 - Releasing a transfer job impossible due to parallel lock on job table ?

  The SAP error message CNV_PE_POST823 indicates that a transfer job cannot be released due to a parallel lock on the job table. This typically occurs in the context of data migration or transfer processes, particularly when using SAP's data migration tools or the SAP S/4HANA Migration Cockpit.
  Cause:
  The error is caused by a locking mechanism that prevents multiple processes from accessing the same job table simultaneously. This can happen if:
  
  Another job is currently running and has locked the job table.
  There are multiple instances of the same job trying to access the job table at the same time.
  A previous job did not release its lock properly due to an error or interruption.
  
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Check Running Jobs: 
  
  Use transaction codes like SM37 (Job Monitoring) to check if there are any jobs currently running that might be holding the lock on the job table.
  If you find a job that is stuck or taking too long, you may need to cancel it.
  
  
  
  Wait for Completion: 
  
  If another job is running, you may need to wait for it to complete before attempting to release your transfer job.
  
  
  
  Release Locks: 
  
  If you suspect that a job has failed and is holding a lock, you can use transaction SM12 (Delete Locks) to check for and delete any locks that are no longer needed. Be cautious when doing this, as it may affect other users or processes.
  
  
  
  Check for Parallel Processing Settings: 
  
  Review the settings for parallel processing in your job configuration. If parallel processing is not necessary, consider disabling it to avoid conflicts.
  
  
  
  System Restart: 
  
  In some cases, a system restart may be necessary to clear any lingering locks, especially if the issue persists after trying the above steps.
  
  
  
  Consult SAP Notes: 
  
  Check the SAP Support Portal for any relevant SAP Notes or updates related to this error message. There may be specific patches or recommendations provided by SAP.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 for job monitoring, SM12 for lock management, and SM21 for system logs.
  SAP Documentation: Review SAP documentation related to data migration and job management for best practices and troubleshooting tips.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  By following these steps, you should be able to resolve the CNV_PE_POST823 error and successfully release your transfer job.