How To Fix ML_CAI_MESSAGE106 - RFC Destination: invalid connection type for destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ML_CAI_MESSAGE -

• Message number: 106

• Message text: RFC Destination: invalid connection type for destination &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ML_CAI_MESSAGE106 - RFC Destination: invalid connection type for destination &1 ?

  The SAP error message ML_CAI_MESSAGE106 with the description "RFC Destination: invalid connection type for destination &1" typically indicates that there is an issue with the configuration of an RFC (Remote Function Call) destination in your SAP system. This error occurs when the connection type specified for the RFC destination is not valid or not supported.
  Cause:
  
  
  Invalid Connection Type: The RFC destination may have been configured with an incorrect or unsupported connection type. Common connection types include:
  
  T (TCP/IP connection)
  3 (HTTP connection)
  2 (CPIC connection)
  1 (Logical connection)
  
  
  
  Configuration Issues: The RFC destination may not be properly configured in transaction SM59. This could include missing parameters or incorrect settings.
  
  
  Network Issues: There may be network-related issues preventing the connection from being established, although this is less likely to trigger this specific error message.
  
  
  Authorization Issues: The user or service account trying to access the RFC destination may not have the necessary authorizations.
  
  
  Solution:
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59.
  Locate the RFC destination that is causing the error (replace &1 with the actual destination name).
  Verify the connection type and ensure it is set to a valid type.
  Check all other parameters (like target host, system number, client, etc.) to ensure they are correctly configured.
  
  
  
  Test the Connection:
  
  In SM59, select the RFC destination and use the "Test Connection" button to verify if the connection can be established successfully.
  
  
  
  Review Authorization:
  
  Ensure that the user or service account has the necessary authorizations to access the RFC destination.
  
  
  
  Check SAP Notes:
  
  Look for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  
  
  Consult Documentation:
  
  Review SAP documentation for RFC destinations to ensure that all required settings are correctly configured.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59 - RFC Destinations
  SU01 - User Maintenance (to check user authorizations)
  
  
  
  Common Connection Types:
  
  T: TCP/IP connection
  3: HTTP connection
  2: CPIC connection
  1: Logical connection
  
  
  
  SAP Documentation: Refer to the official SAP Help Portal for detailed information on configuring RFC destinations and troubleshooting RFC-related issues.
  
  
  By following these steps, you should be able to identify and resolve the issue related to the RFC destination error.