How To Fix DMC_GENERAL339 - Structure inconsistency of DDIC proxy table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_GENERAL - MWB: General Messages

• Message number: 339

• Message text: Structure inconsistency of DDIC proxy table &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_GENERAL339 - Structure inconsistency of DDIC proxy table &1 ?

  The SAP error message DMC_GENERAL339 indicates a structure inconsistency in a Data Dictionary (DDIC) proxy table. This typically occurs in the context of Data Migration Cockpit (DMC) or when working with data migration projects in SAP S/4HANA or other SAP systems.
  Cause:
  The error is usually caused by one of the following issues:
  
  Inconsistent Data Structure: The structure of the DDIC proxy table does not match the expected structure defined in the Data Dictionary. This can happen if there have been changes to the underlying data model or if the proxy table was not properly generated or updated.
  Missing Fields: Required fields in the proxy table may be missing or incorrectly defined.
  Version Mismatch: There may be a version mismatch between the data model and the proxy table, especially if there have been updates or changes in the system.
  Transport Issues: If the proxy table was transported from one system to another, inconsistencies may arise if the target system does not have the same configuration or data model.
  
  Solution:
  To resolve the DMC_GENERAL339 error, you can follow these steps:
  
  
  Check the Structure: Verify the structure of the DDIC proxy table against the expected structure. You can do this by using transaction SE11 (Data Dictionary) to view the table definition.
  
  
  Re-generate the Proxy Table: If the structure is inconsistent, you may need to regenerate the proxy table. This can often be done through the Data Migration Cockpit or by using relevant transaction codes.
  
  
  Adjust Data Model: If there have been changes to the data model, ensure that the proxy table is updated accordingly. This may involve modifying the table structure or adding missing fields.
  
  
  Transport Consistency: If the issue arose after a transport, ensure that all related objects and dependencies were transported correctly. You may need to re-transport or adjust the configuration in the target system.
  
  
  Check for Notes: Look for SAP Notes related to this error message. SAP frequently releases notes that provide fixes or workarounds for known issues.
  
  
  Consult Documentation: Review the official SAP documentation for the Data Migration Cockpit and related tools to ensure that you are following the correct procedures.
  
  
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), and DMC-related transactions.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide guidance on similar issues.
  Data Migration Cockpit Documentation: Review the official SAP documentation for the Data Migration Cockpit for best practices and troubleshooting tips.
  
  By following these steps, you should be able to identify and resolve the structure inconsistency causing the DMC_GENERAL339 error.