How To Fix DMC_GENERAL456 - Migration Object &1 and &2 are incompatible; copy visibility not possible


SAP Error Message - Details

  • Message type: E = Error

  • Message class: DMC_GENERAL - MWB: General Messages

  • Message number: 456

  • Message text: Migration Object &1 and &2 are incompatible; copy visibility not possible

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  • Self-Explanatory Message

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Smart SAP Assistant

  • What is the cause and solution for SAP error message DMC_GENERAL456 - Migration Object &1 and &2 are incompatible; copy visibility not possible ?

    The SAP error message DMC_GENERAL456 indicates that there is an incompatibility between two migration objects during a data migration process, specifically in the context of SAP Data Migration Cockpit (DMC). The message states that the migration objects identified by &1 and &2 cannot be copied due to this incompatibility.

    Cause:

    1. Incompatible Migration Objects: The two migration objects you are trying to work with may have different structures, data types, or relationships that prevent them from being copied or migrated together.
    2. Configuration Issues: There may be configuration settings in the migration project that do not align with the requirements of the migration objects.
    3. Version Mismatch: If the migration objects are from different versions of the source or target systems, this could lead to incompatibility.
    4. Data Model Changes: Changes in the data model between the source and target systems can also lead to incompatibility issues.

    Solution:

    1. Check Migration Object Compatibility: Review the documentation for the migration objects to ensure they are compatible. Look for any prerequisites or dependencies that need to be addressed.
    2. Adjust Migration Project Settings: Ensure that the settings in your migration project are correctly configured to handle the migration of the specific objects you are working with.
    3. Data Mapping: If the objects are fundamentally different, consider creating a mapping strategy that allows you to transform the data from one object to another.
    4. Consult SAP Notes: Check for any relevant SAP Notes or updates that may address known issues with the migration objects you are using.
    5. Testing: Conduct tests with smaller datasets to identify the specific incompatibility and adjust your migration strategy accordingly.

    Related Information:

    • SAP Data Migration Cockpit (DMC): This tool is used for migrating data from legacy systems to SAP S/4HANA or other SAP solutions. Understanding its functionalities and limitations is crucial for successful migrations.
    • Migration Object Documentation: Each migration object has specific documentation that outlines its structure, requirements, and compatibility with other objects.
    • SAP Community and Support: Engaging with the SAP Community or reaching out to SAP Support can provide additional insights and solutions from other users who may have encountered similar issues.

    By following these steps and understanding the context of the error, you should be able to resolve the incompatibility issue and proceed with your data migration successfully.

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