How To Fix DMC_UTIL_MSG002 - RFC connections: Sender and receiver are identical

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_UTIL_MSG - DMC: Messages for General Functions

• Message number: 002

• Message text: RFC connections: Sender and receiver are identical

What causes this issue?

Identical RFC-connections have been selected for sender and
receiver system.

System Response

The connection to the receiver system has not been closed.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

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 DMC_UTIL_MSG002 - RFC connections: Sender and receiver are identical ?

  The SAP error message DMC_UTIL_MSG002 indicates that there is an issue with Remote Function Call (RFC) connections where the sender and receiver are identical. This typically occurs in scenarios where a system is trying to establish an RFC connection to itself, which is not allowed.
  Cause:
  
  Configuration Error: The most common cause is a misconfiguration in the RFC destination settings. The system is trying to call an RFC destination that points back to itself.
  Incorrect Logical System Name: The logical system name in the RFC destination might be incorrectly set to the same system.
  Transport Layer Issues: If you are working with transport layers or system copies, the RFC destinations may not have been updated correctly.
  
  Solution:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 (RFC Destinations).
  Look for the RFC destination that is causing the issue.
  Ensure that the destination is not pointing to the same system. If it is, you need to create a new RFC destination that points to the correct target system.
  
  
  
  Correct Logical System Name:
  
  Verify the logical system name in the RFC destination settings.
  Ensure that it is set to the correct target system and not the same as the source system.
  
  
  
  Review Configuration:
  
  If you are using a transport layer or have recently performed a system copy, review the configuration to ensure that all RFC destinations are correctly set up.
  
  
  
  Testing the Connection:
  
  After making changes, use the Connection Test feature in SM59 to verify that the RFC destination is working correctly.
  
  
  
  Check for Programmatic Calls:
  
  If the error occurs during a programmatic call, review the code to ensure that it is not inadvertently trying to call an RFC to itself.
  
  
  
  Related Information:
  
  RFC (Remote Function Call): A protocol used in SAP systems to enable communication between different systems or between different instances of the same system.
  Transaction SM59: This transaction is used to manage RFC destinations in SAP.
  Logical System: A unique identifier for an SAP system in a landscape, which is used in various configurations, including RFC destinations.
  
  By following these steps, you should be able to resolve the DMC_UTIL_MSG002 error and ensure that your RFC connections are correctly configured.