How To Fix /SCMB/SC_CAL301 - Error during locking

/SCMB/SC_CAL301 - Overview

• Message type: E = Error

• Message class: /SCMB/SC_CAL -

• Message number: 301

• Message text: Error during locking

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCMB/SC_CAL301 - Error during locking ?

  The SAP error message /SCMB/SC_CAL301 typically indicates an issue related to locking during the execution of a process in the Supply Chain Management (SCM) module, particularly in the context of planning or scheduling activities. This error can occur when a process tries to access a resource that is already locked by another process or user.
  
  Cause:
  
  Concurrent Access: The most common cause of this error is that another user or process is currently accessing the same data or resource, leading to a locking conflict.
  Long-Running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, causing subsequent transactions to fail with this error.
  System Configuration: Incorrect configuration of locking mechanisms or settings in the SCM module can also lead to this error.
  Database Issues: Sometimes, underlying database issues can cause locking problems, especially if there are performance bottlenecks.
  
  
  Solution:
  
  Identify the Lock: Use transaction codes like SM12 (to view and manage