How To Fix /SMB/CM_API_COMMON257 - Wrong RFC Connection

SAP Error Message - Details

• Message type: E = Error

• Message class: /SMB/CM_API_COMMON -

• Message number: 257

• Message text: Wrong RFC Connection

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SMB/CM_API_COMMON257 - Wrong RFC Connection ?

  The SAP error message /SMB/CM_API_COMMON257 Wrong RFC Connection typically indicates that there is an issue with the Remote Function Call (RFC) connection being used in the SAP system. This error can occur in various scenarios, particularly when trying to connect to an external system or service.
  Causes:
  
  Incorrect RFC Destination: The RFC destination configured in the SAP system may be incorrect or not properly set up.
  Network Issues: There may be network connectivity issues between the SAP system and the target system.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  Configuration Errors: There may be misconfigurations in the RFC settings, such as incorrect parameters or missing entries.
  Service Unavailability: The target service or system may be down or not reachable.
  
  Solutions:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Verify the settings of the RFC destination being used. Ensure that the connection type, target host, and system number are