How To Fix S_UNIFIED_CON109 - Set Lock has failed because one single processing action &1 is running

S_UNIFIED_CON109 - Overview

• Message type: E = Error

• Message class: S_UNIFIED_CON - Message Class for Unified Connectivity

• Message number: 109

• Message text: Set Lock has failed because one single processing action &1 is running

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

S_UNIFIED_CON109 - Details

• The SAP error message S_UNIFIED_CON109 indicates that a lock could not be set because a single processing action is already running. This typically occurs in scenarios where multiple processes or transactions are trying to access the same resource or data simultaneously, leading to a conflict.
  
  Cause:
  
  Concurrent Processing: The error usually arises when a transaction or process is already being executed, and another attempt is made to execute the same transaction or process that requires a lock on the same resource.
  Long-Running Transactions: If a transaction takes a long time to complete, it can block other transactions from acquiring the necessary locks.
  Deadlocks: In some cases, deadlocks can occur if two or more processes are waiting for each other to release locks.
  
  
  Solution:
  
  Wait and Retry: If the process is expected to complete soon, you can wait for a while and then retry the operation.
  Check Running Processes: Use transaction codes like SM50 (Process Overview) or SM66