How To Fix DMC_RT_MSG040 - Can't process table &2 (portion &1, migration object &4)

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_MSG - DMC: Runtime Object Messages

• Message number: 040

• Message text: Can't process table &2 (portion &1, migration object &4)

What causes this issue?

When the system is processing the table, the system compares the number
of records that have been selected from table &V2& with the number of
records that the system expects to process. These numbers are not the
same.
Possible reasons for this include:
The foreign key relationship between table &V2& and &V3& is incorrect.
This can happen, for example, if the key fields of table &V3& have not
been mapped completely to table &V2&.

System Response

The system stops processing the migration object &V4&.

How to fix this error?

Check the foreign key relationship for the source system table.
If the source system table contains inconsistent data, consider creating
an access plan in order to ignore the inconsistent data.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_RT_MSG040 - Can't process table &2 (portion &1, migration object &4) ?

  The SAP error message DMC_RT_MSG040 indicates that there is an issue with processing a specific table during a data migration process. This error typically occurs in the context of SAP Data Migration Cockpit (DMC) or during the execution of a migration project.
  Cause:
  The error message can be triggered by several factors, including but not limited to:
  
  Data Quality Issues: The data in the source table may not meet the required format or constraints for the target system.
  Configuration Errors: There may be misconfigurations in the migration object or the mapping settings.
  Technical Issues: There could be issues with the underlying database, such as locks, missing tables, or connectivity problems.
  Incomplete Migration Object: The migration object may not be fully defined or may be missing necessary components.
  Version Compatibility: The source and target systems may not be compatible in terms of data structure or version.
  
  Solution:
  To resolve the DMC_RT_MSG040 error, you can follow these steps:
  
  Check Data Quality: Review the data in the source table for any inconsistencies, missing values, or format issues. Clean the data as necessary.
  Review Migration Object Configuration: Ensure that the migration object is correctly configured. Check the mapping and transformation rules to ensure they align with the target structure.
  Examine Logs: Look at the detailed logs provided by the Data Migration Cockpit for more specific error messages that can give clues about the root cause.
  Test with Smaller Data Sets: If possible, try migrating a smaller subset of the data to isolate the issue.
  Check for Technical Issues: Verify that the database is functioning correctly, and there are no locks or connectivity issues. Ensure that all necessary tables exist in the target system.
  Consult Documentation: Refer to SAP documentation for the Data Migration Cockpit for any specific guidelines or troubleshooting steps related to the error.
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the DMC or the specific migration object you are using.
  Migration Cockpit Documentation: Review the official SAP documentation for the Data Migration Cockpit for best practices and troubleshooting tips.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the DMC_RT_MSG040 error.