How To Fix CM018 - The routing is locked by another user (only display).

SAP Error Message - Details

• Message type: E = Error

• Message class: CM - Task list messages: Material component allocations

• Message number: 018

• Message text: The routing is locked by another user (only display).

What causes this issue?

You cannot maintain material component allocations to operations of
this routing because the routing is being processed by another user.
For this reason, the material component allocations are only displayed.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM018 - The routing is locked by another user (only display). ?

  The SAP error message CM018 indicates that a routing is currently locked by another user, and as a result, you can only view the routing but cannot make any changes. This typically occurs in the context of production planning and control when multiple users are trying to access the same routing data simultaneously.
  Cause:
  
  Concurrent Access: Another user is currently editing the routing, which locks the data for other users to prevent conflicting changes.
  Session Timeout: A user may have left a session open, causing the routing to remain locked.
  System Configuration: Certain configurations in the SAP system may lead to prolonged locks on objects.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait until the other user has finished their work and released the lock. You can periodically check back to see if the routing is available for editing.
  Identify the Lock: If you have the necessary authorizations, you can use transaction code SM12 to view and identify the user who has locked the routing. This transaction allows you to see the lock entries and the users associated with them.
  Contact the User: If you identify the user who has the lock, you can reach out to them to see if they can release the lock or if they are done with their changes.
  Release the Lock: If the user is no longer available (e.g., they have logged off unexpectedly), and you have the necessary permissions, you can manually delete the lock entry in transaction SM12. However, this should be done with caution, as it may lead to data inconsistencies if the other user was in the middle of making changes.
  Check for Long-Running Transactions: Sometimes, long-running transactions can hold locks for extended periods. You can check for these in transaction SM66 (Global Work Process Overview) to see if there are any processes that are taking too long.
  
  Related Information:
  
  Lock Management: Understanding how SAP handles locks can help in troubleshooting similar issues. Locks are typically managed at the database level to ensure data integrity.
  User Authorizations: Ensure that users have the appropriate authorizations to access and modify routing data.
  Training and Best Practices: Educate users on best practices for accessing shared resources in SAP to minimize lock conflicts, such as logging off when not in use or coordinating with team members.
  
  If the issue persists or if you frequently encounter this error, it may be worth discussing with your SAP Basis team or system administrator to investigate any underlying issues with the system configuration or user practices.