How To Fix /SCMTMS/SCH174 - Schedule locked; changes to &1 departure locations will be applied later

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMTMS/SCH -

• Message number: 174

• Message text: Schedule locked; changes to &1 departure locations will be applied later

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCMTMS/SCH174 - Schedule locked; changes to &1 departure locations will be applied later ?

  The SAP error message /SCMTMS/SCH174 Schedule locked; changes to &1 departure locations will be applied later typically occurs in the SAP Transportation Management (TM) module. This message indicates that the schedule for a particular transportation request or shipment is currently locked, preventing any changes from being made to the departure locations at that moment.
  Cause:
  
  Schedule Locking: The schedule may be locked due to ongoing processes such as planning, execution, or other transactions that are currently being processed. This is a common scenario in systems where multiple users or processes may be trying to access or modify the same data simultaneously.
  Background Jobs: There may be background jobs running that are updating the schedule, which can lead to temporary locks.
  User Sessions: Another user may have the schedule open in their session, causing a lock on the data.
  
  Solution:
  
  Wait and Retry: Often, the simplest solution is to wait for a few moments and then try to make the changes again. The lock may be released once the ongoing process completes.
  Check Background Jobs: If you have access, check for any background jobs that might be running and causing the lock. You can do this through transaction codes like SM37 (Job Monitoring).
  Identify Locking User: Use transaction SM12 to check for any locks held by users. If you find a lock that seems unnecessary, you may need to contact the user or administrator to resolve it.
  System Logs: Review system logs for any errors or warnings that might provide additional context about the locking issue.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of TM you are using, as there may be known issues or patches available.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view locks), SM37 (to monitor jobs), and SLG1 (to check application logs).
  SAP Notes: Search for SAP Notes related to /SCMTMS/SCH174 for any specific fixes or recommendations provided by SAP.
  User Roles and Authorizations: Ensure that users have the appropriate roles and authorizations to make changes to the schedules, as insufficient permissions can also lead to issues.
  
  By following these steps, you should be able to diagnose and resolve the issue related to the schedule lock in SAP TM.