How To Fix STEP090 - *** Messages for RFC communication ***

SAP Error Message - Details

• Message type: E = Error

• Message class: STEP - ISO 10303 STEP Mapping Messages

• Message number: 090

• Message text: *** Messages for RFC communication ***

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message STEP090 - *** Messages for RFC communication *** ?

  The SAP error message STEP090, which pertains to RFC (Remote Function Call) communication, typically indicates that there is an issue with the communication between SAP systems or between an SAP system and an external system. This error can arise due to various reasons, including network issues, configuration problems, or authorization issues.
  Causes of STEP090 Error
  
  Network Issues: Problems with the network connection between the SAP systems can lead to communication failures.
  RFC Destination Configuration: Incorrect configuration of the RFC destination in the SAP system can cause this error. This includes incorrect hostnames, ports, or connection types.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to perform the requested operation.
  System Availability: The target system may be down or not reachable due to maintenance or other issues.
  Firewall or Security Settings: Firewalls or security settings may be blocking the communication between the systems.
  SAP Kernel or Version Issues: Incompatibilities between different SAP versions or kernel issues can also lead to RFC communication problems.
  
  Solutions to STEP090 Error
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination that is causing the issue. Ensure that the hostname, service, and connection type are correct.
  Test the connection using the "Test Connection" button in the RFC destination configuration.
  
  
  Review User Authorizations: Ensure that the user credentials used for the RFC connection have the necessary authorizations. You can check this in transaction SU01 or PFCG.
  Check System Status: Verify that the target system is up and running. You can check the system status in transaction SM51 or by logging into the target system directly.
  Firewall and Security Settings: Ensure that any firewalls or security settings are configured to allow communication between the systems on the required ports.
  Review SAP Notes: Check for any relevant SAP Notes that may address known issues with RFC communication or specific error messages.
  Update SAP Kernel: If the issue persists, consider updating the SAP kernel or applying relevant patches that may resolve compatibility issues.
  
  Related Information
  
  
  Transaction Codes: 
  
  SM59: Manage RFC destinations.
  SM51: Display SAP instances.
  SU01: User maintenance.
  PFCG: Role maintenance.
  
  
  
  SAP Notes: Search for SAP Notes related to RFC communication issues or the specific error message for additional guidance.
  
  
  Logs and Traces: Check the system logs (transaction SM21) and RFC traces (transaction SM58) for more detailed error messages that can provide further insights into the issue.
  
  
  By following these steps, you should be able to diagnose and resolve the STEP090 error related to RFC communication in SAP.