How To Fix DMCLG387 - No ID could be assigned to append structure &1

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 387

• Message text: No ID could be assigned to append structure &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG387 - No ID could be assigned to append structure &1 ?

  The SAP error message DMCLG387 "No ID could be assigned to append structure &1" typically occurs when there is an issue with the assignment of an ID to an append structure in the Data Dictionary (DDIC). This can happen during the creation or modification of database tables or structures in the ABAP Dictionary.
  Cause:
  
  ID Assignment Conflict: The append structure you are trying to create or modify may be conflicting with existing structures or append structures. Each append structure must have a unique ID.
  Technical Settings: The technical settings of the table or structure may not allow for the creation of new append structures.
  Transport Issues: If you are working in a transport environment, there may be issues with the transport request that is preventing the append structure from being created properly.
  Naming Conventions: The naming conventions for the append structure may not be followed, leading to conflicts.
  
  Solution:
  
  Check Existing Structures: Verify if there are existing append structures or tables that may conflict with the one you are trying to create. You can do this by checking the Data Dictionary (SE11) for existing structures.
  Unique Naming: Ensure that the name of the append structure is unique and follows the naming conventions set by your organization.
  Technical Settings: Review the technical settings of the base table or structure to ensure that it allows for append structures. You can do this in the Data Dictionary (SE11) by checking the properties of the base table.
  Transport Request: If you are in a transport environment, check the transport request for any issues. You may need to release or adjust the transport request.
  Recreate the Append Structure: If the above steps do not resolve the issue, consider deleting the append structure (if it exists) and recreating it from scratch.
  
  Related Information:
  
  Transaction Codes: Use SE11 (Data Dictionary) to check the structures and tables, and SE14 (Database Utility) to check for inconsistencies.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the SAP documentation on Data Dictionary and append structures for best practices and guidelines.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or ABAP development team for further assistance.