How To Fix DMC_RT_GEN012 - RFC system error (destination &1, function module &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_GEN - DMC: Nachrichten der Generierungfunktionen

• Message number: 012

• Message text: RFC system error (destination &1, function module &2)

What causes this issue?

Executing an RFC-call a system-error in the called system has been
detected. It is an ABAP-runtime error. The called module is named
&V2&<(>&<)>V2<(>&<)>. It has been called via RFC-destination &V1&
<(>&<)>V1<(>&<)>.

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?

Check the message of the following protocol line and examine the
details of this runtime error in the called system (transaction code
ST22).

Procedure for System Administrators

None.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_RT_GEN012 - RFC system error (destination &1, function module &2) ?

  The SAP error message DMC_RT_GEN012 indicates an RFC (Remote Function Call) system error. This error typically occurs when there is an issue with the connection to the specified RFC destination or when there is a problem with the function module being called. Here’s a breakdown of the potential causes, solutions, and related information:
  Causes:
  
  
  RFC Destination Issues:
  
  The specified RFC destination may not be configured correctly.
  The destination may be inactive or not reachable due to network issues.
  Incorrect credentials or authorization issues for the RFC destination.
  
  
  
  Function Module Issues:
  
  The function module specified in the error may not exist or may not be active in the target system.
  There may be version mismatches between the systems involved.
  The function module may have been changed or deleted.
  
  
  
  Network Issues:
  
  Network connectivity problems between the SAP systems.
  Firewall settings blocking the communication.
  
  
  
  System Configuration:
  
  Incorrect settings in the SAP system configuration related to RFC connections.
  Missing or incorrect parameters in the RFC destination settings.
  
  
  
  Solutions:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 and verify the configuration of the RFC destination mentioned in the error message.
  Test the connection to ensure it is working properly. If it fails, check the settings and correct any issues.
  
  
  
  Verify Function Module:
  
  Check if the function module specified in the error message exists in the target system. You can do this by using transaction SE37 or SE80.
  Ensure that the function module is active and has the correct interface.
  
  
  
  Network Troubleshooting:
  
  Check network connectivity between the systems. Use tools like ping or traceroute to diagnose any network issues.
  Ensure that any firewalls or security settings allow traffic between the systems.
  
  
  
  Authorization Checks:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to execute the function module.
  
  
  
  Review System Logs:
  
  Check the system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SE37: Function Module
  SE80: Object Navigator
  SM21: System Log
  
  
  
  SAP Documentation: Refer to the official SAP documentation for more detailed information on RFC connections and function modules.
  
  
  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 diagnose and resolve the DMC_RT_GEN012 RFC system error effectively.