How To Fix MPE_OAN279 - OA identifier &1 already used in the produce segment of operation &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 279

• Message text: OA identifier &1 already used in the produce segment of operation &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPE_OAN279 - OA identifier &1 already used in the produce segment of operation &2 ?

  The SAP error message MPE_OAN279 indicates that there is a conflict with the Object Assignment Number (OA identifier) in the production segment of a specific operation. This error typically arises in the context of production planning and execution, particularly when dealing with operations in a routing or production order.
  Cause:
  The error occurs when the same OA identifier is being used more than once in the same operation segment. This can happen due to:
  
  Duplicate Entries: The OA identifier has been assigned to multiple components or operations within the same production order.
  Incorrect Configuration: There may be a configuration issue in the routing or production order setup that allows for duplicate identifiers.
  Data Migration Issues: If data has been migrated from another system or if there have been recent changes to the routing or production order, it may lead to inconsistencies.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check for Duplicates: Review the production order and the associated routing to identify where the OA identifier is being duplicated. Ensure that each operation segment has a unique OA identifier.
  
  
  Modify the Routing: If the routing is incorrectly set up, modify it to ensure that each operation segment uses a unique OA identifier.
  
  
  Adjust Production Order: If the production order has been incorrectly created or modified, you may need to delete or adjust the conflicting entries.
  
  
  Consult Documentation: Review SAP documentation or help resources for specific guidelines on managing OA identifiers in your version of SAP.
  
  
  Contact Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support or your internal IT team for further assistance.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CO02 (Change Production Order) or CA03 (Display Routing) to investigate and modify the relevant entries.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Roles: Ensure that you have the necessary permissions to make changes to production orders and routings, as restrictions may prevent you from resolving the issue.
  
  By following these steps, you should be able to identify and resolve the cause of the MPE_OAN279 error in your SAP system.