How To Fix S_UCON_LM210 - No valid communication assembly selected.

SAP Error Message - Details

• Message type: E = Error

• Message class: S_UCON_LM - Messages for Unified Connectivity LM process

• Message number: 210

• Message text: No valid communication assembly selected.

What causes this issue?

Assign und Remove is not working if you select "*" as Communication
Assembly.

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?

You can assign or unassign a Remote Function Module<(>,<)> only if you
select a specific Communication Assembly.

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 S_UCON_LM210 - No valid communication assembly selected. ?

  The SAP error message S_UCON_LM210: No valid communication assembly selected typically occurs in the context of SAP's User Connection (UCON) framework, which is used for managing and monitoring communication between different systems or components within the SAP landscape.
  Cause:
  The error usually indicates that the system is unable to find a valid communication assembly for the specified connection. This can happen due to several reasons:
  
  Configuration Issues: The communication assembly may not be properly configured in the system.
  Missing Components: Required components or assemblies may be missing or not installed.
  Authorization Issues: The user may not have the necessary authorizations to access the communication assembly.
  System Updates: Recent updates or changes in the system may have affected the configuration or availability of the communication assembly.
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Configuration:
  
  Go to the UCON configuration settings in the SAP system.
  Ensure that the communication assembly is correctly defined and active.
  
  
  
  Verify Installation:
  
  Check if the required communication components are installed and available in the system.
  If any components are missing, install them as needed.
  
  
  
  Review Authorizations:
  
  Ensure that the user encountering the error has the necessary authorizations to access the communication assembly.
  You may need to consult with your SAP security team to verify and adjust user roles and permissions.
  
  
  
  Check System Logs:
  
  Review system logs (transaction codes like SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to UCON and communication assemblies for any specific guidance or troubleshooting steps.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error and the steps you have already taken.
  
  
  
  Related Information:
  
  Transaction Codes: You may find relevant information in transaction codes like UCON, SLG1, or SU53 for authorization checks.
  SAP Notes: Search for SAP Notes related to UCON and communication assemblies in the SAP Support Portal for any known issues or patches.
  Community Forums: Check SAP Community forums or other online resources where similar issues may have been discussed.
  
  By following these steps, you should be able to identify and resolve the cause of the S_UCON_LM210 error in your SAP system.