How To Fix /SAPAPO/AHT428 - Action &2 for event &1 is locked by a parallel work process

/SAPAPO/AHT428 - Overview

• Message type: E = Error

• Message class: /SAPAPO/AHT -

• Message number: 428

• Message text: Action &2 for event &1 is locked by a parallel work process

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/AHT428 - Action &2 for event &1 is locked by a parallel work process ?

  The SAP error message /SAPAPO/AHT428 Action &2 for event &1 is locked by a parallel work process typically occurs in the SAP Advanced Planning and Optimization (APO) module when a specific action or event is being processed by another work process. This locking mechanism is in place to prevent data inconsistencies that could arise from concurrent processing of the same event.
  
  Cause:
  
  Concurrent Processing: The most common cause of this error is that the event or action you are trying to execute is already being processed by another user or work process. SAP uses locks to ensure that only one process can modify a particular piece of data at a time.
  Long-Running Processes: If a process takes a long time to complete, it can lead to other processes being blocked, resulting in this error.
  System Configuration: In some cases, the system configuration or settings related to parallel processing might lead to locking issues.
  
  
  Solution:
  
  Wait and