How To Fix CNV_20900122 - Maintain mapping (Optional): Activity not possible at this moment

CNV_20900122 - Overview

• Message type: E = Error

• Message class: CNV_20900 - Message class for package CNV_20900

• Message number: 122

• Message text: Maintain mapping (Optional): Activity not possible at this moment

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.

Unfortunately, there isn't any extra information in this error notice.

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CNV_20900122 - Details

• The SAP error message CNV_20900122 with the description "Maintain mapping (Optional): Activity not possible at this moment" typically occurs during data migration or conversion processes, particularly when using SAP's Conversion Tools or the SAP S/4HANA Migration Cockpit. This error indicates that the system is unable to perform the requested mapping activity at that moment.
  Possible Causes:
  
  Locking Issues: The data or mapping table might be locked by another user or process, preventing you from making changes.
  Incomplete Configuration: The migration or conversion process may not be fully configured, leading to issues when trying to maintain mappings.
  System Performance: High system load or performance issues could temporarily prevent the execution of certain activities.
  Authorization Issues: The user may not have the necessary authorizations to perform the mapping activity.
  Technical Errors: There could be underlying technical issues or bugs in the migration tool or the SAP system itself.
  
  Solutions:
  
  Check Locks: Use transaction codes like SM12 to check for any