How To Fix CH155 - No control parameters defined - connection not established

SAP Error Message - Details

• Message type: E = Error

• Message class: CH - CAD/PP integration messages

• Message number: 155

• Message text: No control parameters defined - connection not established

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 CH155 - No control parameters defined - connection not established ?

  The SAP error message CH155 ("No control parameters defined - connection not established") typically occurs in the context of SAP's communication and connection management, particularly when dealing with background jobs, remote function calls (RFC), or when trying to establish a connection to a system or service.
  Cause:
  
  Missing Control Parameters: The error indicates that the necessary control parameters for establishing a connection are not defined in the system. This could be due to misconfiguration in the connection settings.
  Incorrect RFC Destination: If the RFC destination is not properly configured or does not exist, it can lead to this error.
  Authorization Issues: The user or service trying to establish the connection may not have the necessary authorizations.
  Network Issues: There could be network-related issues preventing the connection from being established.
  System Configuration: The SAP system may not be properly configured to handle the specific type of connection being requested.
  
  Solution:
  
  
  Check RFC Destination:
  
  Go to transaction code SM59 to check the RFC destination settings.
  Ensure that the destination is correctly configured with the appropriate parameters (e.g., target host, system number, client, user credentials).
  Test the connection from this screen to see if it is working.
  
  
  
  Define Control Parameters:
  
  If control parameters are missing, you may need to define them in the relevant configuration settings. This could involve setting up parameters in transaction RZ10 or other relevant configuration transactions.
  
  
  
  Review Authorizations:
  
  Ensure that the user or service account has the necessary authorizations to establish the connection. Check roles and profiles assigned to the user.
  
  
  
  Check Network Configuration:
  
  Verify that there are no firewall or network issues preventing the connection. Ensure that the necessary ports are open and that the systems can communicate with each other.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that resolve known issues.
  
  
  
  System Logs:
  
  Review system logs (transaction SM21) and developer traces (transaction ST22) for any additional error messages or information that could provide more context about the issue.
  
  
  
  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
  RZ10: Profile Parameters
  SM21: System Log
  ST22: Dump Analysis
  
  
  Documentation: Refer to SAP Help documentation for detailed information on configuring RFC connections and troubleshooting connection issues.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the CH155 error in your SAP system.