How To Fix DMC_GENERAL420 - Migration object is defined for table &1

DMC_GENERAL420 - Overview

• Message type: E = Error

• Message class: DMC_GENERAL - MWB: General Messages

• Message number: 420

• Message text: Migration object is defined for table &1

Self-Explanatory Message

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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 DMC_GENERAL420 - Migration object is defined for table &1 ?

  The SAP error message DMC_GENERAL420 typically occurs during data migration processes, particularly when using the SAP Data Migration Cockpit (DMC). This error indicates that a migration object has been defined for a specific table, which may lead to conflicts or issues during the migration process.
  
  Cause:
  The error message DMC_GENERAL420 is usually triggered by one of the following reasons:
  
  Duplicate Migration Object: The migration object for the specified table is already defined in the system, which can lead to conflicts if you attempt to define it again.
  Incorrect Configuration: There may be an issue with the configuration of the migration object, such as incorrect mapping or settings that do not align with the source or target data structures.
  Data Consistency Issues: The data being migrated may not meet the requirements or constraints defined for the migration object, leading to validation errors.
  
  
  Solution:
  To resolve the DMC_GENERAL420 error, you can take the following steps:
  
  
  Check Existing Migration Objects:
  
  Verify if