How To Fix OPS_SE_HUM_XI_PROX021 - exactly once request: enqueue failure: &1

OPS_SE_HUM_XI_PROX021 - Overview

• Message type: E = Error

• Message class: OPS_SE_HUM_XI_PROX - Message class for XI HU messages

• Message number: 021

• Message text: exactly once request: enqueue failure: &1

Self-Explanatory Message

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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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Smart SAP Assistant

• What is the cause and solution for SAP error message OPS_SE_HUM_XI_PROX021 - exactly once request: enqueue failure: &1 ?

  The SAP error message OPS_SE_HUM_XI_PROX021 indicates an "enqueue failure" related to the "exactly once" request processing in the SAP system. This error typically occurs in scenarios where the system is trying to ensure that a message is processed exactly once, but it encounters a problem with acquiring the necessary lock (enqueue) for that operation.
  
  Cause:
  
  Lock Contention: The most common cause of this error is that another process is holding the lock that your process is trying to acquire. This can happen if multiple processes are trying to access the same resource simultaneously.
  Long-running Transactions: If a transaction takes too long to complete, it may hold onto the lock longer than expected, causing other requests to fail.
  System 
  Configuration Issues: There may be configuration issues in the SAP system that affect how locks are managed.
  Database Issues: Problems with the underlying database can also lead to enqueue failures.
  
  
  Solution:
  
  Check Lock Entries: Use transaction code SM12 to