How To Fix MM_PUR_SES142 - Changing Purchasing Document External Reference is not allowed.

SAP Error Message - Details

• Message type: E = Error

• Message class: MM_PUR_SES -

• Message number: 142

• Message text: Changing Purchasing Document External Reference is not allowed.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MM_PUR_SES142 - Changing Purchasing Document External Reference is not allowed. ?

  The SAP error message MM_PUR_SES142 indicates that you are trying to change the external reference of a purchasing document (like a purchase order) in a way that is not permitted by the system. This restriction is typically in place to maintain data integrity and ensure that the purchasing documents remain consistent throughout their lifecycle.
  Cause:
  
  Document Status: The purchasing document may be in a status that does not allow changes, such as being fully processed, completed, or already delivered.
  Authorization Issues: The user may not have the necessary authorizations to make changes to the external reference field.
  System Configuration: Certain configurations in the SAP system may restrict changes to specific fields in purchasing documents.
  Document Type Restrictions: Some document types may have specific rules that prevent changes to the external reference.
  
  Solution:
  
  Check Document Status: Verify the status of the purchasing document. If it is completed or in a status that does not allow changes, you may need to create a new document or follow the appropriate process to modify it.
  Review Authorizations: Ensure that the user has the necessary permissions to make changes to the purchasing document. This may involve checking roles and authorizations in the SAP system.
  Consult Configuration: If you have access to system configuration, check if there are any settings that restrict changes to the external reference field. This may involve consulting with your SAP Basis or configuration team.
  Use Alternative Methods: If changing the external reference is not possible, consider using alternative methods to achieve your goal, such as adding notes or comments to the document or creating a new document with the correct reference.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message. SAP frequently releases notes that address specific error messages and provide guidance on how to resolve them.
  Documentation: Review the SAP documentation related to purchasing documents and their fields to understand the implications of changing the external reference.
  Support: If the issue persists and you cannot find a resolution, consider reaching out to your SAP support team or consulting with SAP directly for assistance.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.