How To Fix NSDM_MM_MIG065 - ERROR: field &1 has unknown type, detail field comparison not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: NSDM_MM_MIG - MM-IM: Messages for Migration

• Message number: 065

• Message text: ERROR: field &1 has unknown type, detail field comparison not possible

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 NSDM_MM_MIG065 - ERROR: field &1 has unknown type, detail field comparison not possible ?

  The SAP error message NSDM_MM_MIG065 indicates that there is an issue with a field in the context of data migration, specifically that the field has an "unknown type," which prevents a detailed field comparison from being performed. This error typically arises during data migration processes, such as when using the SAP Data Migration Cockpit or similar tools.
  Cause:
  
  Field Type Mismatch: The field in question may not be correctly defined in the source or target system. This could be due to a missing or incorrect data type definition.
  Inconsistent Data Model: The data model in the source system may not match the expected data model in the target system, leading to fields being unrecognized.
  Configuration Issues: There may be configuration issues in the migration settings that do not align with the data structure of the source or target systems.
  Custom Fields: If the field is a custom field, it may not be properly mapped or recognized in the migration process.
  
  Solution:
  
  Check Field Definitions: Verify the field definitions in both the source and target systems. Ensure that the field types are correctly defined and match between the two systems.
  Review Migration Mapping: Check the mapping configuration in the migration tool. Ensure that all fields are correctly mapped and that there are no missing mappings for custom fields.
  Update Data Model: If there are discrepancies in the data model, consider updating the target system's data model to include the necessary fields or types.
  Consult Documentation: Refer to SAP documentation for the specific migration tool you are using to ensure that you are following the correct procedures and that all necessary configurations are in place.
  Debugging: If the issue persists, consider enabling debugging or logging in the migration tool to get more detailed information about the error and the context in which it occurs.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on data migration issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Data Migration Cockpit: Familiarize yourself with the SAP Data Migration Cockpit and its functionalities, as it may provide additional tools or options for troubleshooting migration errors.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.