How To Fix ML_CAI_MESSAGE105 - RFC Destination &1 has wrong Path Prefix.

SAP Error Message - Details

• Message type: E = Error

• Message class: ML_CAI_MESSAGE -

• Message number: 105

• Message text: RFC Destination &1 has wrong Path Prefix.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ML_CAI_MESSAGE105 - RFC Destination &1 has wrong Path Prefix. ?

  The SAP error message ML_CAI_MESSAGE105 indicates that there is an issue with the RFC (Remote Function Call) destination configuration, specifically that the path prefix for the destination is incorrect. This error typically arises in scenarios where SAP systems are trying to communicate with external systems or services, such as when using the SAP Cloud Platform Integration (CPI) or other middleware solutions.
  Cause
  The error can be caused by several factors:
  
  Incorrect Path Prefix: The path prefix defined in the RFC destination does not match the expected format or is not correctly set up.
  Configuration Issues: The RFC destination may not be configured properly in the SAP system, leading to incorrect routing of requests.
  Network Issues: There may be network-related issues preventing the SAP system from reaching the destination.
  Authorization Issues: The user or service account used for the RFC connection may not have the necessary permissions to access the destination.
  
  Solution
  To resolve the error, you can follow these steps:
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC destination that is causing the issue.
  Verify the settings, especially the Path Prefix. Ensure that it is correctly set according to the requirements of the target system.
  
  
  
  Test the RFC Connection:
  
  In transaction SM59, select the RFC destination and use the Connection Test option to check if the connection can be established successfully.
  If the test fails, review the error message for more details.
  
  
  
  Review Network Settings:
  
  Ensure that there are no firewall or network issues preventing the SAP system from reaching the external destination.
  Check if the hostname and port specified in the RFC destination are correct.
  
  
  
  Check User Authorizations:
  
  Ensure that the user or service account used for the RFC connection has the necessary authorizations to access the destination.
  You can check user roles and authorizations in transaction SU01.
  
  
  
  Consult Documentation:
  
  If you are using a specific middleware or integration platform, refer to its documentation for the correct configuration settings, including the expected path prefix.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support or your system administrator for further assistance.
  
  
  
  Related Information
  
  Transaction Codes: 
  
  SM59: For managing RFC destinations.
  SU01: For user management and authorization checks.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Integration Scenarios: If this error occurs in the context of specific integration scenarios (e.g., SAP CPI), consult the relevant integration documentation for configuration guidelines.
  
  By following these steps, you should be able to identify and resolve the issue related to the RFC destination path prefix.