How To Fix /SCMTMS/SCH172 - Schedule locked; your changes to &1 departures will be applied later

/SCMTMS/SCH172 - Overview

• Message type: E = Error

• Message class: /SCMTMS/SCH -

• Message number: 172

• Message text: Schedule locked; your changes to &1 departures will be applied later

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.

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/SCMTMS/SCH172 - Details

• The SAP error message /SCMTMS/SCH172 Schedule locked; your changes to &1 departures will be applied later typically occurs in the context of SAP Transportation Management (TM) when there is an attempt to modify a schedule that is currently locked. This can happen for various reasons, such as:
  
  Cause:
  
  Concurrent Access: Another user or process is currently modifying the same schedule, which locks it to prevent conflicting changes.
  Background Jobs: A background job may be running that is processing the schedule, causing it to be locked.
  System Configuration: Certain configurations or settings in the system may lead to schedules being locked during specific operations.
  
  
  Solution:
  
  Wait and Retry: If the lock is temporary (e.g., due to another user), wait for a few moments and then try to apply your changes again.
  Check for Active Sessions: Use transaction codes like SM12 (to check for locks) or SM21 (to check system logs) to identify if another user or process is