How To Fix MW234 - You cannot change the source of supply

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 234

• Message text: You cannot change the source of supply

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 MW234 - You cannot change the source of supply ?

  The SAP error message MW234, which states "You cannot change the source of supply," typically occurs when you attempt to modify the source of supply for a material that is already assigned to a purchase order, contract, or other procurement document. This restriction is in place to maintain data integrity and ensure that existing procurement processes are not disrupted.
  Causes:
  
  Existing Procurement Documents: The material is already linked to a purchase order, contract, or scheduling agreement.
  Source List Restrictions: The source list for the material may have been set to prevent changes.
  Material Status: The material may have a status that restricts changes to its procurement settings.
  Locked Records: The record may be locked due to ongoing transactions or processes.
  
  Solutions:
  
  Check Existing Documents: Review any existing purchase orders, contracts, or scheduling agreements that reference the material. If changes are necessary, you may need to adjust or delete these documents first.
  Source List Maintenance: If the source list is preventing changes, you may need to update the source list settings. You can do this using transaction code ME01 (Create Source List) or ME02 (Change Source List).
  Material Master Data: Ensure that the material master data is correctly set up. You can check this using transaction code MM02 (Change Material).
  Unlock Records: If the record is locked, you may need to wait until the transaction is completed or consult with your SAP administrator to unlock it.
  Consult Documentation: Review SAP documentation or consult with your SAP support team for specific guidelines related to your organization's configuration.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME21N (Create Purchase Order), ME22N (Change Purchase Order), ME01 (Create Source List), and ME02 (Change Source List).
  User Authorizations: Ensure that you have the necessary authorizations to make changes to the source of supply.
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address the issue.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to your SAP support team for further assistance.