How To Fix MD751 - &1 for the production lot &2 is already being processed by &3

MD751 - Overview

• Message type: E = Error

• Message class: MD - Material Requirements Planning (MRP)

• Message number: 751

• Message text: &1 for the production lot &2 is already being processed by &3

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 MD751 - &1 for the production lot &2 is already being processed by &3 ?

  The SAP error message MD751 indicates that a production lot is currently being processed by another user or transaction. This typically occurs in scenarios where multiple users or processes are trying to access or modify the same production lot simultaneously, leading to a lock situation.
  
  Cause:
  
  Concurrent Access: Another user or process is currently working on the same production lot, which causes a lock on that lot.
  Long-running Transactions: If a transaction is taking a long time to complete, it may hold the lock for an extended period, preventing others from accessing the lot.
  System Configuration: Certain configurations in the system may lead to locks being held longer than necessary.
  
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for a few moments and then retrying the operation may resolve the issue.
  Identify the Locking User/Process: Use transaction codes like SM12 (to view locks) or SM21 (to check system logs) to identify which user or process