How To Fix CNV_MBT203 - Error while inserting the entry for subactivity &1 into table &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 203

• Message text: Error while inserting the entry for subactivity &1 into table &2

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT203 - Error while inserting the entry for subactivity &1 into table &2 ?

  The SAP error message CNV_MBT203 typically occurs during data migration or conversion processes, particularly when using the SAP Migration Tool (like the SAP S/4HANA Migration Cockpit). This error indicates that there was an issue while trying to insert an entry for a subactivity into a specific table.
  Cause:
  The error can be caused by several factors, including:
  
  Data Integrity Issues: The data being inserted may violate constraints or rules defined in the target table (e.g., primary key violations, foreign key constraints).
  Missing Required Fields: The entry being inserted may be missing mandatory fields that are required by the target table.
  Incorrect Data Format: The data being inserted may not conform to the expected format (e.g., date formats, numeric formats).
  Database Locking Issues: There may be locks on the target table that prevent the insertion of new entries.
  Configuration Issues: There may be issues with the configuration of the migration process or the mapping of fields.
  
  Solution:
  To resolve the CNV_MBT203 error, you can take the following steps:
  
  Check the Error Log: Review the detailed error log to identify the specific subactivity and table that caused the error. This can provide insights into what went wrong.
  Validate Data: Ensure that the data being migrated is complete and adheres to the required formats and constraints of the target table.
  Check for Locks: Use transaction codes like SM12 to check for any locks on the target table that might be preventing the insertion.
  Review Configuration: Verify the configuration settings in the migration tool to ensure that all mappings and settings are correct.
  Test with Sample Data: If possible, try inserting a small set of data manually to see if the issue persists. This can help isolate the problem.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration process you are using for any known issues or additional troubleshooting steps.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE37 (Function Modules), and ST22 (Dump Analysis) for further investigation.
  SAP Notes: Search for SAP Notes related to the CNV_MBT203 error for any patches or updates that may address the issue.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit for best practices and troubleshooting tips.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the CNV_MBT203 error.