Hello Experts,
Currently I am working on a Scenario Proxy to Rest on PO 7.5 Dual Stack.
Process Overview : Whenever an ABAP Program is Executed it sends request payload to the outbound service interface which i have created on PO System which again passes the payload to receiver system and gets back with response, And response is stored in a ZTable with the help of ABAP.
Problem : Since we all know ESR Objects created on PO System reflects on SAP System (SPROXY Tcode) we need to regenerate the Proxy and create a Proxy class to use it into the ABAP Program.
While testing with dummy data in SPROXY Tcode, Structure visible two times which is not expected.

(IMG 1 - Snapshot from SPROXY Tcode)
Snapshot of Structure Created in PO System (Request Message Types) in ESR.

As The Structure is created to accept one ProcessOrderNumber, Why i am having getting structure with two input nodes in SPROXY (Img 1).
Even, Configurations of all other interfaces are same and tried clearing cache and regenerating proxy in SAP whenever changes has been done in ESR.
Created 6 other Interface following the same process flow they are totally working fine.