How To Fix T5520 - RFC destination is initial, specify a new or existing RFC destination

T5520 - Overview

• Message type: E = Error

• Message class: T5 - SAPphone: Messages for telephony

• Message number: 520

• Message text: RFC destination is initial, specify a new or existing RFC destination

What causes this issue?

The RFC destination has not been specified.

How to fix this error?

Specify the RFC destination that you want to maintain or create. You
can select existing RFC destinations using the input help (F4).

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

Error message extract from SAP system. Copyright SAP SE.

T5520 - Details

• The SAP error message "T5520 RFC destination is initial, specify a new or existing RFC destination" typically occurs when the system is trying to access a Remote Function Call (RFC) destination that has not been defined or is not properly configured. This can happen in various scenarios, such as when trying to execute a function module that requires an RFC connection to another SAP system or an external system.
  
  Cause:
  
  Missing RFC Destination: The specified RFC destination does not exist in the system.
  Incorrect Configuration: The RFC destination exists but is not configured correctly (e.g., incorrect connection parameters).
  Authorization Issues: The user may not have the necessary authorizations to access the specified RFC destination.
  System Settings: The system settings may not be properly configured to recognize the RFC destination.
  
  
  Solution:
  
  
  Check RFC Destination:
  
  Go to transaction code SM59 in the SAP GUI.
  Check if the required RFC destination is listed. If it is not, you will need to create