How To Fix E0034 - Do not direct all IDocs to the same port

E0034 - Overview

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 034

• Message text: Do not direct all IDocs to the same port

What causes this issue?

A function module for sending IDocs was called, that can only be called
for a fixed port.
It was called for port '&v1&', but there was at least one entry with
another recipient port in the table of control records to be sent.

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?

Please inform your system administration.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0034 - Do not direct all IDocs to the same port ?

  The SAP error message E0034, "Do not direct all IDocs to the same port," typically occurs in the context of IDoc processing in SAP systems. This error indicates that there is a configuration issue related to the IDoc communication setup, specifically regarding the assignment of IDocs to communication ports.
  
  Cause:
  The error arises when multiple IDocs are configured to be sent to the same port without proper differentiation. In SAP, a port is used to define how IDocs are sent and received, and directing all IDocs to the same port can lead to processing issues, such as message collisions or confusion in routing.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Port Configuration:
  
  Go to transaction code WE21 (Port Definition) in SAP.
  Review the ports that are defined and ensure that different types of IDocs are assigned to different ports as needed.
  
  
  
  Assign Different Ports:
  
  If you have multiple IDoc types that are currently directed