How To Fix MDG_TR066 - The key fields in the tables are not the same (&1, &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_TR - MDG: Transport Tool

• Message number: 066

• Message text: The key fields in the tables are not the same (&1, &2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDG_TR066 - The key fields in the tables are not the same (&1, &2) ?

  The SAP error message MDG_TR066 indicates that there is a mismatch in the key fields between two tables that are being compared or processed in the Master Data Governance (MDG) module. This error typically arises during data replication, validation, or when trying to synchronize data between different systems or tables.
  Cause:
  The error occurs when the key fields (primary keys) defined in the two tables do not match in terms of structure, data type, or the number of fields. This can happen due to various reasons, such as:
  
  Configuration Issues: The tables may have been configured incorrectly, leading to discrepancies in the key fields.
  Data Model Changes: Changes in the data model (e.g., adding or removing fields) that have not been consistently applied across all relevant tables.
  Custom Development: Custom enhancements or developments that do not adhere to the expected key field structure.
  Data Migration Issues: Problems during data migration processes where the key fields were not properly aligned.
  
  Solution:
  To resolve the MDG_TR066 error, you can follow these steps:
  
  
  Check Table Definitions: Review the definitions of the tables involved (indicated by &1 and &2 in the error message) to ensure that the key fields are defined consistently. This includes checking the number of key fields, their data types, and their names.
  
  
  Adjust Configuration: If there are discrepancies in the configuration, adjust the settings in the MDG configuration to ensure that the key fields match.
  
  
  Review Data Model: If there have been recent changes to the data model, ensure that all relevant tables have been updated accordingly. This may involve updating the data model in the MDG system and regenerating any necessary objects.
  
  
  Check Custom Code: If there is custom code involved in the process, review it to ensure that it correctly handles the key fields and adheres to the expected structure.
  
  
  Data Consistency: Ensure that the data in both tables is consistent and that there are no orphaned records or mismatches that could lead to this error.
  
  
  Testing: After making the necessary adjustments, perform thorough testing to ensure that the error is resolved and that data processing works as expected.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the MDG_TR066 error. SAP frequently updates its knowledge base with solutions for common issues.
  MDG Documentation: Refer to the official SAP MDG documentation for guidance on configuring key fields and understanding the data model.
  Community Forums: Engage with the SAP community forums or support channels for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the MDG_TR066 error and implement a solution to resolve it.