How To Fix /SAPAPO/TSM548 - No lock monitor (SNP and DP) is active

/SAPAPO/TSM548 - Overview

• Message type: E = Error

• Message class: /SAPAPO/TSM -

• Message number: 548

• Message text: No lock monitor (SNP and DP) is active

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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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/TSM548 - No lock monitor (SNP and DP) is active ?

  The SAP error message /SAPAPO/TSM548 No lock monitor (SNP and DP) is active typically occurs in the context of SAP Advanced Planning and Optimization (APO), specifically when dealing with the Supply Network Planning (SNP) and Demand Planning (DP) modules. This error indicates that the lock monitor, which is essential for managing concurrent access to planning data, is not active. Here’s a breakdown of the cause, potential solutions, and related information:
  
  Cause:
  
  Lock Monitor Not Started: The lock monitor for SNP and DP is not running. This can happen if the system was not properly configured or if the lock monitor was stopped for some reason.
  System 
  Configuration Issues: There may be configuration issues in the APO system that prevent the lock monitor from starting.
  Background Job Issues: The background job responsible for starting the lock monitor may not be scheduled or may have failed.
  
  
  Solution:
  
  
  Start the Lock Monitor:
  
  You can manually start the lock monitor by