How To Fix CMM_ALLOC015 - Purchase order item could not be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: CMM_ALLOC - Allocation Messages

• Message number: 015

• Message text: Purchase order item could not be locked

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 CMM_ALLOC015 - Purchase order item could not be locked ?

  The SAP error message CMM_ALLOC015 indicates that a purchase order item could not be locked. This typically occurs when multiple users or processes are trying to access or modify the same purchase order item simultaneously, leading to a conflict in data access.
  Causes:
  
  Concurrent Access: Another user or process is currently editing or has locked the purchase order item.
  System Lock: The system may have a lock on the item due to a previous transaction that has not been completed or released.
  Background Jobs: Background jobs or batch processes that are running and accessing the same purchase order item can cause locking issues.
  Database Locking: Database-level locks may be in place due to long-running transactions or deadlocks.
  
  Solutions:
  
  Wait and Retry: If the error is due to concurrent access, waiting for a few moments and then retrying the operation may resolve the issue.
  Check for Locks: Use transaction codes like SM12 (Display and Delete Locks) to check for existing locks on the purchase order item. If you find a lock that is no longer needed, you can delete it (if you have the necessary authorizations).
  Identify the User/Process: If you find a lock, identify the user or process that holds the lock. Communicate with them to see if they can release the lock.
  Review Background Jobs: Check if there are any background jobs that might be causing the lock. You can use transaction SM37 to monitor background jobs.
  Transaction Completion: Ensure that any previous transactions involving the purchase order item have been completed properly. If a transaction was interrupted, it might have left the item in a locked state.
  System Restart: In some cases, a system restart may be necessary to clear locks, but this should be done with caution and typically requires coordination with your IT department.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  SM12: To view and manage locks.
  SM37: To monitor background jobs.
  SE11: To check the database table structure if needed.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Authorizations: Ensure that users have the appropriate authorizations to access and modify purchase orders.
  
  If the issue persists after trying the above solutions, it may be necessary to consult with your SAP Basis team or SAP support for further assistance.