How To Fix CONV135 - Connection error to RFC destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CONV - Messages in Connection with the Converter

• Message number: 135

• Message text: Connection error to RFC destination &1

What causes this issue?

Connection error while calling the conversion server

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?

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 CONV135 - Connection error to RFC destination &1 ?

  The SAP error message CONV135 indicates a connection error to a Remote Function Call (RFC) destination. This error typically occurs when there is an issue with the configuration or connectivity to the specified RFC destination in the SAP system. Below are the potential causes, solutions, and related information for this error:
  Causes:
  
  Incorrect RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system.
  Network Issues: There may be network connectivity problems between the SAP system and the target system.
  Target System Down: The target system that the RFC destination points to may be down or not reachable.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  Firewall Restrictions: Firewalls may be blocking the connection to the target system.
  SAP Gateway Issues: The SAP Gateway service may not be running or may be misconfigured.
  
  Solutions:
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC destination that is causing the error and check its configuration settings (e.g., target host, system number, client, user, password).
  Test the connection using the "Connection Test" button.
  
  
  
  Verify Network Connectivity:
  
  Ensure that the network connection between the SAP system and the target system is active.
  Use tools like ping or telnet to check connectivity to the target host and port.
  
  
  
  Check Target System Status:
  
  Verify that the target system is up and running.
  Check if the target system is reachable and operational.
  
  
  
  Review User Authorizations:
  
  Ensure that the user credentials specified in the RFC destination have the necessary authorizations to perform the required operations.
  
  
  
  Firewall Configuration:
  
  Check if there are any firewall rules that might be blocking the connection to the target system.
  Work with your network/security team to ensure that the necessary ports are open.
  
  
  
  SAP Gateway Configuration:
  
  Ensure that the SAP Gateway service is running on the SAP system.
  Check the gateway logs for any errors that might indicate issues with the service.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: To manage and test RFC destinations.
  SMGW: To monitor the SAP Gateway.
  SICF: To check and manage HTTP services if applicable.
  
  
  
  Logs and Traces:
  
  Check the system logs (transaction SM21) and developer traces (transaction ST22) for any additional error messages that might provide more context.
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC connections.
  
  
  By following these steps, you should be able to diagnose and resolve the CONV135 error in your SAP system. If the issue persists, consider reaching out to SAP support for further assistance.