How To Fix MA306 - Underlying network is locked

MA306 - Overview

• Message type: E = Error

• Message class: MA - Sales and Operations Planning

• Message number: 306

• Message text: Underlying network is locked

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 MA306 - Underlying network is locked ?

  The SAP error message MA306, which states "Underlying network is locked," typically occurs in the context of SAP's Material Management (MM) module, particularly when dealing with network activities in project systems or production planning. This error indicates that the network you are trying to access or modify is currently locked, preventing any changes or updates.
  Causes:
  
  Locked by Another User: The network may be locked by another user who is currently working on it. SAP locks certain objects to prevent simultaneous changes that could lead to data inconsistencies.
  Background Jobs: A background job might be running that is currently processing the network, which can also lead to it being locked.
  Transaction Errors: If a previous transaction did not complete successfully, it might leave the network in a locked state.
  System Configuration: Certain configurations or settings in the system might lead to locking issues.
  
  Solutions:
  
  Check Lock Entries: Use transaction code SM12 to check for lock entries. You