How To Fix CLMS_TM102 - RFC Connection to client & not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: CLMS_TM - Message class for the tenant mulitplexer

• Message number: 102

• Message text: RFC Connection to client & not possible

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CLMS_TM102 - RFC Connection to client & not possible ?

  The SAP error message CLMS_TM102 indicates that there is an issue with the RFC (Remote Function Call) connection to the client. This error typically arises when the system is unable to establish a connection to the specified client in the SAP system landscape. Here are some common causes, potential solutions, and related information for this error:
  Causes:
  
  Network Issues: There may be network connectivity problems between the systems involved.
  Incorrect Configuration: The RFC destination may not be configured correctly in the SAP system.
  Client Not Available: The target client may not be available or may not exist.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  System Down: The target SAP system or client may be down or undergoing maintenance.
  Firewall Restrictions: Firewalls or security settings may be blocking the connection.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that the network connection between the systems is stable and operational. You can use tools like ping or traceroute to test connectivity.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination. Ensure that the connection parameters (such as the target system, client number, and user credentials) are correct.
  
  
  
  Check Client Availability:
  
  Ensure that the target client is active and available. You can check this in transaction SCC4 to see if the client is defined and active.
  
  
  
  Review User Authorizations:
  
  Make sure that the user credentials used for the RFC connection have the necessary authorizations to access the target client.
  
  
  
  Check System Status:
  
  Verify that the target SAP system is up and running. You can check the system status in the SAP Management Console (SAP MMC) or by contacting your system administrator.
  
  
  
  Firewall and Security Settings:
  
  Ensure that there are no firewall rules or security settings that are blocking the RFC connection. Consult with your network/security team if necessary.
  
  
  
  Check SAP Notes:
  
  Look for any relevant SAP Notes that may address this specific error. Sometimes, there are known issues or patches that can resolve the problem.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: To manage RFC destinations.
  SCC4: To manage clients in the SAP system.
  SU01: To manage user accounts and authorizations.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for more detailed information on RFC connections and troubleshooting.
  
  
  SAP Community: You can also check the SAP Community forums for discussions related to this error, as other users may have encountered and resolved similar issues.
  
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or technical support for further investigation.