How To Fix 03106 - Function can only be executed in central lock server

SAP Error Message - Details

• Message type: E = Error

• Message class: 03 -

• Message number: 106

• Message text: Function can only be executed in central lock server

What causes this issue?

You tried to execute the test function <LS>Save client SE</>. You can
only execute this function on the enqueue (lock) server. You are logged
on to another R/3 server.

System Response

The system does not execute the function.

How to fix this error?

RESET N1
Determine the name of the enqueue server. To do this, in the lock
management (Transaction SM12) choose <LS>Extras -> Diagnosis</>. The
first line in the list displayed states the enqueue server.
Use the <LS>Server selection</> function in the SAP logon program to
log onto the enqueue server.
Repeat the operation in the lock management.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 03106 - Function can only be executed in central lock server ?

  The SAP error message "03106 Function can only be executed in central lock server" typically occurs when a function that requires the central lock server (CLS) is called in a system that is not configured to use it. This error is related to the SAP lock management system, which is responsible for managing data consistency in a multi-user environment.
  Cause:
  
  Central Lock Server Not Configured: The system is not set up to use a central lock server, which is necessary for certain functions that require distributed lock management.
  Incorrect System Configuration: The system might be incorrectly configured, leading to the inability to access the central lock server.
  Network Issues: There may be network connectivity issues preventing the application server from reaching the central lock server.
  System Type: The function being called is intended for use in a distributed environment where a central lock server is present, but the current system is standalone or not properly integrated.
  
  Solution:
  
  Check Configuration: Ensure that the central lock server is properly configured in your SAP landscape. This includes verifying the settings in the instance profile and ensuring that the central lock server is running.
  Review System Landscape: If you are working in a distributed environment, confirm that the system is part of a landscape that includes a central lock server.
  Network Connectivity: Check for any network issues that might be preventing communication between the application server and the central lock server.
  SAP Notes: Look for relevant SAP Notes that might address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  Consult Documentation: Review the SAP documentation for lock management and central lock server configuration to ensure all steps have been followed correctly.
  Contact SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  Lock Management in SAP: Understanding how SAP handles locks is crucial. The central lock server is designed to manage locks across multiple application servers to ensure data consistency.
  SAP Basis Administration: Knowledge of SAP Basis administration can help in troubleshooting and configuring the central lock server.
  System Landscape Directory (SLD): Ensure that your system landscape is correctly defined in the SLD, as this can affect the configuration and operation of the central lock server.
  
  By addressing the configuration and connectivity issues, you should be able to resolve the error and allow the function to execute as intended.