How To Fix CNVA_20400_CHECK030 - An implicit merge of activity types by a controlling area mapping

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVA_20400_CHECK - Messages for contorlling areas checks

• Message number: 030

• Message text: An implicit merge of activity types by a controlling area mapping

An implicit merge of activity types by a controlling area mapping was
detected. This happens when controlling areas are merged and contain
activity types with the same name. From a business point of view it
needs to be checked if the merging activity types have the same semantic
and a merge is wanted. If you don't want to merge the listed activity
types you have to create an activity type mapping.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNVA_20400_CHECK030 - An implicit merge of activity types by a controlling area mapping ?

  The SAP error message CNVA_20400_CHECK030 indicates that there is an issue with the implicit merging of activity types in a controlling area mapping during a migration or data transfer process. This typically occurs in the context of SAP Controlling (CO) when you are trying to map activity types from one controlling area to another, and there is a conflict or inconsistency in the mapping.
  Cause:
  
  
  Implicit Merge of Activity Types: The error suggests that there are multiple activity types that are being implicitly merged due to the mapping configuration. This can happen if:
  
  The same activity type exists in both controlling areas but with different characteristics.
  There are inconsistencies in the definitions of activity types between the source and target controlling areas.
  The mapping configuration does not clearly define how to handle these activity types.
  
  
  
  Configuration Issues: There may be issues in the configuration of the controlling areas or the activity types that lead to this error.
  
  
  Data Inconsistencies: There might be inconsistencies in the data being migrated, such as missing or incorrect entries for activity types.
  
  
  Solution:
  
  
  Review Mapping Configuration: Check the mapping configuration for the controlling areas involved. Ensure that the activity types are correctly defined and that there are no overlaps or conflicts.
  
  
  Check Activity Type Definitions: Verify the definitions of the activity types in both controlling areas. Ensure that they are consistent and that any necessary adjustments are made to avoid implicit merging.
  
  
  Adjust Data: If there are inconsistencies in the data, correct them before attempting the migration again. This may involve updating or deleting conflicting activity types.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to controlling area mapping and activity types for specific guidance on resolving this error.
  
  
  Testing: After making the necessary adjustments, perform a test migration to ensure that the error does not occur again.
  
  
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who specializes in Controlling (CO) for further assistance.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with transaction codes related to controlling area configuration, such as OX19 (for controlling area settings) and OKEQ (for activity type settings).
  Migration Tools: If you are using specific migration tools (like SAP S/4HANA Migration Cockpit), ensure that you are following the recommended procedures for mapping and migrating controlling area data.
  
  By addressing the underlying causes and following the suggested solutions, you should be able to resolve the CNVA_20400_CHECK030 error effectively.