How To Fix MM_PUR_SRCGPROJ087 - External reference cannot be changed.

MM_PUR_SRCGPROJ087 - Overview

• 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

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

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