How To Fix IDOC_METADATA406 - The passed RFC destination '&' has the wrong type

SAP Error Message - Details

• Message type: E = Error

• Message class: IDOC_METADATA - Messages for metadata for the IDoc adapter

• Message number: 406

• Message text: The passed RFC destination '&' has the wrong type

What causes this issue?

The specified RFC destination is not of type SAP or internal.
You can only load IDoc structure data for RFC destinations of these
types.

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 RFC destination and use a different one if necessary.

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 IDOC_METADATA406 - The passed RFC destination '&' has the wrong type ?

  The SAP error message IDOC_METADATA406 indicates that there is an issue with the RFC (Remote Function Call) destination being used in the context of IDoc processing. Specifically, the error message states that the passed RFC destination has the wrong type. This typically occurs when the system is trying to use an RFC destination that is not configured correctly or is not suitable for the operation being performed.
  Cause:
  
  Incorrect RFC Destination Type: The RFC destination may be configured as a type that is not compatible with the operation being performed. For example, it might be set as a "TCP/IP" destination instead of a "T" (Transactional RFC) destination.
  Missing or Incorrect Configuration: The RFC destination may not be properly configured in the SAP system, or it may be missing entirely.
  Network Issues: There could be network connectivity issues preventing the system from reaching the specified RFC destination.
  Authorization Issues: The user or system may not have the necessary authorizations to access the specified RFC destination.
  
  Solution:
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the RFC destination that is causing the issue.
  Verify that the destination type is appropriate for the operation (e.g., it should be a "T" type for transactional RFC).
  Ensure that the connection parameters (like target host, system number, client, etc.) are correctly configured.
  
  
  
  Test the RFC Connection:
  
  In transaction SM59, select the RFC destination and use the "Connection Test" option to verify that the connection is working properly.
  If the connection fails, check the network settings and ensure that the target system is reachable.
  
  
  
  Check Authorizations:
  
  Ensure that the user or system making the RFC call has the necessary authorizations to access the RFC destination.
  
  
  
  Review IDoc Processing Logic:
  
  If you are using custom code or middleware to process IDocs, review the logic to ensure that the correct RFC destination is being used.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  IDoc Processing: IDocs (Intermediate Documents) are used in SAP for data interchange between SAP systems and external systems. Proper configuration of RFC destinations is crucial for successful IDoc processing.
  RFC Types: There are different types of RFC destinations in SAP, including:
  
  T: Transactional RFC
  A: Asynchronous RFC
  3: TCP/IP connection
  
  
  Transaction Codes:
  
  SM59: Manage RFC destinations
  WE02: Display IDocs
  WE19: Test IDoc processing
  
  
  
  By following the above steps, you should be able to identify and resolve the issue related to the IDOC_METADATA406 error message.