How To Fix MC299 - All matchcode pools on the DB also exist in ABAP Dictionary

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 299

• Message text: All matchcode pools on the DB also exist in ABAP Dictionary

What causes this issue?

All the matchcode pools created on the database are consistent, that
is, the corresponding definitions in the ABAP/4 Dictionary exist.

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

System Response

How to fix this error?

Pure information. No action necessary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC299 - All matchcode pools on the DB also exist in ABAP Dictionary ?

  The SAP error message MC299 indicates that there is an issue with matchcode pools in the database and the ABAP Dictionary. This error typically arises when the system detects that all matchcode pools defined in the database also exist in the ABAP Dictionary, which can lead to inconsistencies or conflicts.
  Cause:
  
  Matchcode Pool Definition: The error usually occurs when there is a mismatch or redundancy in the definitions of matchcode pools between the database and the ABAP Dictionary.
  Database Consistency: The database may have matchcode pools that are not properly aligned with the definitions in the ABAP Dictionary, leading to this error.
  Transport Issues: If there have been recent transports or changes to the matchcode pool definitions, it may result in inconsistencies.
  
  Solution:
  To resolve the MC299 error, you can follow these steps:
  
  
  Check Matchcode Pool Definitions:
  
  Use transaction code SE11 (Data Dictionary) to check the matchcode pool definitions in the ABAP Dictionary.
  Compare these definitions with the matchcode pools in the database.
  
  
  
  Rebuild Matchcode Pools:
  
  If you find discrepancies, you may need to rebuild the matchcode pools. This can be done using transaction code SE11 or SE14 (Database Utility).
  You can also use transaction code MC21 to regenerate the matchcode objects.
  
  
  
  Delete Redundant Matchcode Pools:
  
  If there are redundant or obsolete matchcode pools, consider deleting them from the database using transaction code SE14.
  
  
  
  Check for Transport Issues:
  
  If the issue arose after a transport, check the transport logs for any errors or warnings related to matchcode pools.
  Ensure that all necessary objects were transported correctly.
  
  
  
  Database Consistency Check:
  
  Perform a consistency check on the database to ensure that all objects are correctly defined and there are no inconsistencies.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that can resolve the issue.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SE11: Data Dictionary
  SE14: Database Utility
  MC21: Matchcode Object Maintenance
  
  
  Documentation: Refer to SAP Help documentation for more details on matchcode pools and their management.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.