How To Fix CNV_PE166 - Worklist &1 must not be changed; save your work first

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 166

• Message text: Worklist &1 must not be changed; save your work first

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE166 - Worklist &1 must not be changed; save your work first ?

  The SAP error message CNV_PE166 indicates that you are trying to modify a worklist that is currently in use or has unsaved changes. This error typically occurs in the context of data migration or conversion processes, particularly when using SAP's tools for data transfer or transformation.
  Cause:
  
  Unsaved Changes: You have made changes to the worklist but have not saved them yet.
  Worklist in Use: The worklist is currently being accessed or modified by another user or process.
  System Lock: The system may have a lock on the worklist due to ongoing processes or transactions.
  
  Solution:
  
  Save Your Work: If you have made changes to the worklist, ensure that you save them before attempting to make further modifications.
  Check for Locks: Verify if the worklist is locked by another user or process. You can check transaction codes like SM12 (for lock entries) to see if there are any active locks on the worklist.
  Refresh the Worklist: Sometimes, simply refreshing the worklist or reloading the transaction can resolve temporary issues.
  Log Out and Log Back In: If the issue persists, logging out of the SAP system and logging back in can sometimes clear temporary locks or session issues.
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting the SAP Notes for any known issues related to this error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE38 (for executing reports), SM12 (for checking locks), and SE11 (for data dictionary).
  SAP Notes: Check SAP Notes for any specific patches or updates related to the CNV_PE166 error.
  Documentation: Review the documentation for the specific SAP tool or module you are using, as it may provide additional context or troubleshooting steps.
  
  By following these steps, you should be able to resolve the CNV_PE166 error and continue working with your worklist in SAP.