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

SAP Error Message - Details

• 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 to the same port, consider creating additional ports for different IDoc types or logical systems.
  Assign the IDoc types to their respective ports in the partner profile (transaction WE20).
  
  
  
  Review Partner Profiles:
  
  Go to transaction WE20 (Partner Profiles) and check the settings for the relevant partner profiles.
  Ensure that the IDoc types are correctly assigned to the appropriate ports and that there are no overlaps.
  
  
  
  Test IDoc Processing:
  
  After making the necessary changes, test the IDoc processing to ensure that the error does not occur again.
  Use transaction WE02 to monitor IDoc status and ensure they are being processed correctly.
  
  
  
  Consult Documentation:
  
  If you are unsure about the configuration, refer to SAP documentation or consult with your SAP Basis or PI/PO team for best practices regarding IDoc communication setup.
  
  
  
  Related Information:
  
  IDoc Types: Understand the different IDoc types you are working with and their specific requirements.
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or fixes related to this error.
  Monitoring Tools: Use tools like transaction WE02 (IDoc Display) and WE05 (IDoc List) to monitor IDoc processing and troubleshoot issues.
  
  By following these steps, you should be able to resolve the E0034 error and ensure that your IDoc communication is set up correctly.