How To Fix E0603 - Port with destination & already exists

E0603 - Overview

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 603

• Message text: Port with destination & already exists

What causes this issue?

The specified logical destination &v1& already exists in a port
definition.

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?

A port was selected for which the specified logical destination is
entered.
If you do want to use the same logical destination in several ALE
ports, this can be carried out using the following transaction:

<DS:TRAN.OYE4>Execute function</>
ENDIF

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0603 - Port with destination & already exists ?

  The SAP error message E0603, which states "Port with destination & already exists," typically occurs when there is an attempt to create a communication port in the SAP system that already exists with the same name or identifier. This can happen in various contexts, such as when configuring RFC destinations, setting up communication channels, or managing integration scenarios.
  
  Cause:
  
  Duplicate Port Name: The most common cause is that a port with the specified name already exists in the system.
  Configuration Errors: There may be a misconfiguration in the system where the same port is being referenced multiple times.
  Transport Issues: If you are transporting configurations from one system to another, the port may already exist in the target system.
  
  
  Solution:
  
  
  Check Existing Ports: 
  
  Go to transaction code SM59 (RFC Destinations) or SICF (HTTP Services) depending on where the error is occurring.
  Look for the port name in question and verify if it already exists.
  
  
  
  Rename or Delete:
  
  If the