How To Fix MQ651 - Problems when converting table &1 (database structure &2) for key:

SAP Error Message - Details

• Message type: E = Error

• Message class: MQ - Messages for Euro Changeover Package

• Message number: 651

• Message text: Problems when converting table &1 (database structure &2) for key:

What causes this issue?

Problems (warning, error, termination) occurred when converting table
&v1& using database structure &v2&.
The key for the record from structure &v2& for which the problems
described afterwards in the log occurred, are listed in the following
lines of the log.
If an error or termination message was triggered for the record, then
the record has not been completely converted. On the other hand, if
there were information messages or warnings, then the record was
converted.

System Response

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

How to fix this error?

Analyze the following problem messages.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MQ651 - Problems when converting table &1 (database structure &2) for key: ?

  The SAP error message MQ651 indicates that there is a problem when converting a database table structure. This error typically occurs during database operations, such as when trying to access or modify a table that has undergone changes in its structure or when there are inconsistencies in the data.
  Causes:
  
  Table Structure Changes: The table structure may have been altered (e.g., fields added, removed, or changed) without proper migration or adjustment of the data.
  Data Inconsistencies: There may be inconsistencies in the data that prevent the system from correctly interpreting the new structure.
  Database Locking Issues: The table might be locked by another process, preventing the conversion from completing.
  Transport Issues: If the table structure was transported from one system to another, there may have been issues during the transport process.
  Database Corruption: In rare cases, there could be corruption in the database that is causing the error.
  
  Solutions:
  
  Check Table Structure: Verify the current structure of the table in the database and ensure it matches the expected structure in the SAP system.
  Data Consistency Check: Run consistency checks on the data in the table to identify and resolve any inconsistencies.
  Database Locks: Check for any locks on the table using transaction codes like SM12 and release them if necessary.
  Transport Logs: Review transport logs to ensure that the table structure was transported correctly and that there were no errors during the transport.
  Rebuild the Table: If the issue persists, consider rebuilding the table or restoring it from a backup if corruption is suspected.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE11 (Data Dictionary), SE14 (Database Utility), and SE37 (Function Module) to investigate and manage database tables.
  SAP Support: If the issue cannot be resolved internally, consider reaching out to SAP Support for assistance, providing them with the error message and any relevant logs or details.
  Documentation: Review SAP documentation related to database management and error handling for further insights.
  
  By following these steps, you should be able to diagnose and resolve the MQ651 error in your SAP system.