How To Fix DMCLG490 - Start of comparison of migration objects for table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 490

• Message text: Start of comparison of migration objects for table &1

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG490 - Start of comparison of migration objects for table &1 ?

  The SAP error message DMCLG490, which states "Start of comparison of migration objects for table &1," typically occurs during data migration processes, particularly when using the Data Migration Cockpit or similar tools. This message indicates that the system is attempting to compare migration objects for a specific table, but there may be issues that prevent it from completing successfully.
  Possible Causes:
  
  Data Inconsistencies: There may be inconsistencies in the data being migrated, such as missing or incorrect entries.
  Configuration Issues: The migration objects may not be properly configured or mapped to the target structure.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to perform the operation.
  Technical Errors: There could be underlying technical issues, such as database locks or connectivity problems.
  Version Compatibility: The version of the migration tool or the SAP system may not be compatible with the data being migrated.
  
  Solutions:
  
  Check Data Consistency: Review the data in the source and target systems to ensure that it is consistent and complete. Look for any missing or incorrect entries.
  Review Configuration: Ensure that the migration objects are correctly configured. Check the mapping of fields and ensure that all necessary settings are in place.
  Verify Authorizations: Make sure that the user executing the migration has the appropriate authorizations to access and modify the data in both the source and target systems.
  Check for Technical Issues: Look for any database locks or connectivity issues that may be affecting the migration process. You can check system logs for any related errors.
  Update Software: Ensure that you are using the latest version of the migration tool and that it is compatible with your SAP system version.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration process you are using for any additional troubleshooting steps or known issues.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the DMCLG490 error message.
  Migration Cockpit Documentation: Review the official SAP documentation for the Data Migration Cockpit for best practices and troubleshooting tips.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.