How To Fix /SAPDMC/LSMW_OBJ_030004 - A source structure is already assigned to target structure &.

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPDMC/LSMW_OBJ_030 -

• Message number: 004

• Message text: A source structure is already assigned to target structure &.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPDMC/LSMW_OBJ_030004 - A source structure is already assigned to target structure &. ?

  The SAP error message /SAPDMC/LSMW_OBJ_030004 indicates that there is an issue with the assignment of source structures to target structures in the context of the Legacy System Migration Workbench (LSMW). Specifically, it means that a source structure is already assigned to a target structure, which is causing a conflict.
  Cause:
  This error typically occurs when:
  
  You are trying to assign a source structure to a target structure that has already been assigned to another source structure.
  There may be a misconfiguration in the LSMW project where the same source structure is being reused incorrectly.
  There could be an attempt to create a duplicate mapping in the LSMW project.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Existing Assignments:
  
  Go to the LSMW project and check the existing assignments of source structures to target structures. Ensure that the source structure you are trying to assign is not already linked to another target structure.
  
  
  
  Modify Assignments:
  
  If you find that the source structure is already assigned, you will need to either:
  
  Remove the existing assignment if it is no longer needed.
  Choose a different source structure that is not currently assigned to any target structure.
  
  
  
  
  
  Review Mapping:
  
  Review the mapping of fields between the source and target structures. Ensure that the mappings are correctly defined and that there are no conflicts.
  
  
  
  Recreate the Assignment:
  
  If necessary, delete the problematic assignment and recreate it to ensure that it is correctly set up.
  
  
  
  Check for Duplicates:
  
  Ensure that there are no duplicate entries in your LSMW project that could be causing the conflict.
  
  
  
  Related Information:
  
  LSMW Overview: LSMW is a tool in SAP that allows for data migration from legacy systems into SAP systems. It supports various methods of data transfer, including batch input, direct input, BAPIs, and IDocs.
  Error Handling: Familiarize yourself with common error messages in LSMW and their resolutions. This can help in troubleshooting similar issues in the future.
  Documentation: Refer to SAP documentation or help guides specific to LSMW for detailed instructions on managing source and target structures.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting the SAP community for further assistance.