How To Fix MW760 - At least one supplier purchase order cannot be locked

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 760

• Message text: At least one supplier purchase order cannot be locked

What causes this issue?

Vendor purchase orders for distribution centers already exist as
follow- on documents from the allocation table for allocation table
&V1&. You want to change this allocation table. At least one vendor
purchase order cannot be locked.

System Response

Allocation table items cannot be changed for which vendor purchase
orders for distribution centers already exist as follow-on documents
from the allocation table.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW760 - At least one supplier purchase order cannot be locked ?

  The SAP error message MW760, which states "At least one supplier purchase order cannot be locked," typically occurs when there is an issue with locking the purchase order (PO) for processing. This can happen for several reasons, and understanding the cause is essential for finding a solution.
  Causes of MW760 Error
  
  
  Concurrent Access: Another user or process is currently accessing or modifying the purchase order, preventing it from being locked for your transaction.
  
  
  System Lock Issues: The system may have encountered a lock issue due to a previous transaction that did not release the lock properly.
  
  
  Authorization Issues: The user may not have the necessary authorizations to lock the purchase order.
  
  
  Database Issues: There could be underlying database issues that are preventing the locking mechanism from functioning correctly.
  
  
  PO Status: The purchase order may be in a status that does not allow it to be locked (e.g., it may be completed or canceled).
  
  
  Solutions to MW760 Error
  
  
  Check for Concurrent Users: Verify if another user is currently working on the same purchase order. If so, wait for them to finish or coordinate with them to avoid conflicts.
  
  
  Release Locks: If you suspect that a lock is not being released properly, you can use transaction code SM12 to check for and delete any orphaned locks related to the purchase order.
  
  
  Check Authorizations: Ensure that you have the necessary authorizations to access and lock the purchase order. You may need to consult with your SAP security team.
  
  
  Review PO Status: Check the status of the purchase order to ensure it is in a state that allows locking. If it is completed or canceled, you may need to take appropriate actions based on your business processes.
  
  
  System Restart: In some cases, a system restart or a refresh of the session may resolve temporary locking issues.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant notes or patches that may address this specific error.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for further assistance.
  
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME23N (Display Purchase Order), ME22N (Change Purchase Order), and SM12 (Display and Delete Locks).
  User Roles: Ensure that user roles and authorizations are correctly set up in accordance with your organization's policies.
  System Logs: Review system logs for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to diagnose and resolve the MW760 error in SAP.