How To Fix CIRMT401 - It was attempted to call a method that doesn't exist on the source system

SAP Error Message - Details

• Message type: E = Error

• Message class: CIRMT - Message class for CI remote communication framework

• Message number: 401

• Message text: It was attempted to call a method that doesn't exist on the source system

What causes this issue?

,,A remote method call via CL_CI_REMOTE_PROVIDER_ROOT was attempted, but
the requested method does not exist on the target system.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Ensure that a current version of the remote data provider exists on the
target system, or avoid trying to call this method against older
version.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CIRMT401 - It was attempted to call a method that doesn't exist on the source system ?

  The SAP error message CIRMT401 indicates that there was an attempt to call a method that does not exist on the source system. This error typically arises in the context of Remote Function Calls (RFC) or when using Business Application Programming Interfaces (BAPIs) in SAP systems.
  Causes:
  
  Method Not Available: The method being called may not be implemented in the version of the source system you are trying to connect to. This can happen if the source system is an older version of SAP that does not support the method.
  Incorrect Configuration: The RFC destination or the connection settings may be misconfigured, leading to the system trying to call a method that is not available.
  Transport Issues: If the method was recently transported from a development system to a production system, it may not have been properly activated or may not exist in the target system.
  Namespace Issues: If the method is part of a custom development, it may not be available in the target system due to namespace conflicts or missing components.
  
  Solutions:
  
  Check Method Availability: Verify that the method you are trying to call exists in the source system. You can do this by checking the relevant function module or BAPI in the source system.
  Update Source System: If the method is part of a newer version of SAP, consider upgrading the source system to a version that supports the method.
  Review RFC Configuration: Ensure that the RFC destination is correctly configured and points to the right system. Check the connection settings and ensure that the user has the necessary authorizations.
  Transport Validation: If the method was recently transported, check the transport logs to ensure that the transport was successful and that the method is active in the target system.
  Debugging: Use transaction codes like SE37 (Function Module) or SE80 (Object Navigator) to debug and trace the call to see where it fails.
  Consult Documentation: Review the SAP documentation or notes related to the specific method to ensure that you are using it correctly.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the method you are trying to call.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  System Logs: Review system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify the root cause of the CIRMT401 error and implement an appropriate solution.