How To Fix E0420 - Enter a valid receiver port

E0420 - Overview

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 420

• Message text: Enter a valid receiver port

What causes this issue?

An entry with the key &v2& is to be inserted in table
&v1&.
The specified receiver port '&v3&' is not valid.

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?

Enter a valid receiver port. Use the Possible entries pushbutton to
display an overview of the receiver ports.

Error message extract from SAP system. Copyright SAP SE.

E0420 - Details

• The SAP error message E0420 "Enter a valid receiver port" typically occurs in the context of configuring communication between different systems or components in SAP, such as when setting up an RFC (Remote Function Call) destination or configuring a communication channel in SAP PI/PO (Process Integration/Process Orchestration).
  
  Cause:
  
  Invalid Port Configuration: The error usually indicates that the port specified for the receiver is either not defined, incorrectly configured, or does not exist in the system.
  Missing or Incorrect RFC Destination: If you are trying to connect to another SAP system or an external system, the RFC destination may not be set up correctly.
  Transport Layer Issues: There may be issues with the transport layer settings, such as incorrect IP addresses or port numbers.
  Authorization Issues: The user may not have the necessary authorizations to access the specified port or destination.
  
  
  Solution:
  
  
  Check Port Configuration:
  
  Go to the transaction code SM59 (RFC Destinations) and verify that the RFC destination