How To Fix /PF1/MSG_LOG_GUI156 - Error during reservation due to locks in AM; retry &1

/PF1/MSG_LOG_GUI156 - Overview

• Message type: E = Error

• Message class: /PF1/MSG_LOG_GUI -

• Message number: 156

• Message text: Error during reservation due to locks in AM; retry &1

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.

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/PF1/MSG_LOG_GUI156 - Details

• The SAP error message /PF1/MSG_LOG_GUI156 typically indicates that there is a lock issue when trying to create or modify a reservation in the Asset Management (AM) module. This error occurs when the system is unable to access the required data because it is currently locked by another user or process.
  
  Cause:
  
  Locking Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. If another user or transaction is currently accessing the same asset or reservation, it can lead to this error.
  Long-running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, causing other transactions to fail.
  Batch Jobs: Background jobs that are processing data in the same area can also lead to locks.
  Database Locks: Sometimes, database-level locks can occur due to various reasons, including deadlocks or long-running queries.
  
  
  Solution:
  
  Retry the Operation: The simplest solution is to wait for a few moments and then retry the operation. The lock