How To Fix CMPERS122 - Internal error: Conversion function &1 for screen &2 does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: CMPERS - Personalization for Web Applications

• Message number: 122

• Message text: Internal error: Conversion function &1 for screen &2 does not exist

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CMPERS122 - Internal error: Conversion function &1 for screen &2 does not exist ?

  The SAP error message CMPERS122 indicates that there is an internal error related to a conversion function that is expected to be available for a specific screen but is not found. This error typically arises in the context of SAP's Human Capital Management (HCM) module, particularly when dealing with personnel administration or related functionalities.
  Cause:
  
  Missing Conversion Function: The primary cause of this error is that the conversion function specified in the error message does not exist in the system. This could be due to a missing or incorrectly configured function module.
  Custom Development Issues: If there are custom developments or enhancements in the system, it is possible that the custom conversion function was not implemented correctly or is missing.
  Transport Issues: If the system has recently undergone a transport of changes, it is possible that the transport did not include the necessary function module or that it was not activated properly.
  System Upgrade: After an upgrade, certain functions may become obsolete or may not have been migrated correctly.
  
  Solution:
  
  
  Check for the Function Module: 
  
  Use transaction SE37 to check if the conversion function mentioned in the error message exists. If it does not exist, you may need to create it or restore it from a backup.
  
  
  
  Review Custom Code: 
  
  If there are custom developments, review the code to ensure that the conversion function is correctly implemented and activated.
  
  
  
  Transport Management: 
  
  If the issue arose after a transport, check the transport logs to ensure that all necessary objects were included and activated in the target system.
  
  
  
  System Configuration: 
  
  Ensure that the system is properly configured and that all necessary components are installed. Sometimes, missing components can lead to such errors.
  
  
  
  SAP Notes: 
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve the issue.
  
  
  
  Contact SAP Support: 
  
  If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. Provide them with the error details and any relevant logs.
  
  
  
  Related Information:
  
  Transaction Codes: SE37 (Function Builder), SE80 (Object Navigator), ST22 (Dump Analysis), SM21 (System Log).
  Documentation: Review SAP documentation related to the specific module you are working with, as it may provide insights into the expected conversion functions.
  Testing: After making changes, ensure to test the functionality thoroughly to confirm that the error has been resolved and that no new issues have been introduced.
  
  By following these steps, you should be able to identify the root cause of the CMPERS122 error and implement a solution to resolve it.