How To Fix LMON066 - Selected resource elements are already blocked

LMON066 - Overview

• Message type: E = Error

• Message class: LMON - Monitor messages

• Message number: 066

• Message text: Selected resource elements are already blocked

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 LMON066 - Selected resource elements are already blocked ?

  The SAP error message LMON066 indicates that the selected resource elements are already blocked. This typically occurs in the context of resource management, particularly when dealing with logistics or production planning in SAP systems. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  
  Resource Locking: The error usually arises when a resource (like a machine, work center, or production line) is already locked by another process or user. This can happen if:
  
  Another user is currently using the resource.
  A previous transaction did not release the resource properly.
  There is a system or application-level lock on the resource.
  
  
  
  Concurrent Access: If multiple users or processes are trying to access the same resource simultaneously, it can lead to this error.
  
  
  
  Configuration Issues: Sometimes, incorrect configuration settings in the resource management module can lead to locking issues.
  
  
  Solution
  
  
  Check Resource Status: 
  
  Verify if the resource is indeed in use by another user or process. You can do this