How To Fix MM_PUR_SRCGPROJ087 - External reference cannot be changed.

SAP Error Message - Details

• Message type: E = Error

• Message class: MM_PUR_SRCGPROJ - Message class of MM PUR Sourcing Project

• Message number: 087

• Message text: External reference cannot be changed.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MM_PUR_SRCGPROJ087 - External reference cannot be changed. ?

  The SAP error message MM_PUR_SRCGPROJ087 ("External reference cannot be changed") typically occurs in the context of purchasing and procurement processes, particularly when dealing with source lists, purchase requisitions, or purchase orders that are linked to external references (like contracts or other documents).
  Cause:
  This error usually arises when there is an attempt to modify an external reference (such as a contract number or a vendor reference) that is already linked to a purchase requisition or purchase order. The system restricts changes to maintain data integrity and ensure that the references remain consistent throughout the procurement process.
  Solution:
  To resolve this error, consider the following steps:
  
  
  Check the Document Status: Ensure that the document (purchase requisition or purchase order) is not in a status that prevents changes. For example, if it is already released or has been processed, you may not be able to change the external reference.
  
  
  Review the Source List: If the error is related to a source list, check if the source list entry is locked or if there are any restrictions on changing the external reference.
  
  
  Use the Correct Transaction: If you need to change the external reference, ensure you are using the correct transaction code and that you have the necessary authorizations to make changes.
  
  
  Consult Documentation: Review SAP documentation or help files related to the specific transaction you are working with. There may be specific guidelines or restrictions outlined.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  
  Workaround: If changing the external reference is not possible, you may need to create a new document (purchase requisition or purchase order) with the correct external reference and cancel the original document if necessary.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME21N (Create Purchase Order), ME52N (Change Purchase Requisition), and ME11 (Create Source List).
  Authorization Issues: Ensure that you have the necessary authorizations to make changes to procurement documents.
  SAP Notes: Check for any SAP Notes that may address this specific error message or provide additional context.
  
  By following these steps, you should be able to address the MM_PUR_SRCGPROJ087 error effectively.