Specify one file port

What causes this issue?

ALE outbound processing is used to create the test data. This means
that a port is determined to which the IDocs are transferred using the
logical system and the outbound partner profile associated with the
BAPI.
So that the DX Workbench can use this port it must be a file port.

System Response

How to fix this error?

Using transaction <DS:TRAN.WE21>WE21</> create a file port with the
version 'IDoc record type SAP-Release 4.x', by defining a physical
directory and a file name for the outbound file. The field 'function
module' is not supported by the DX-WB.
Then select this file port in the outbound partner profiles
<DS:TRAN.WE20>WE20</>.

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.