Gateway Service for CDS with parameter Error

Hi Gurus,

I am having issue with Gateway service which is generated from CDS view with parameter using annotation. Service is generated and activated successfully all metadata is also loaded...

- Gateway service generated with CDS View without parameter is working fine without any issue...

Gateway version : SAP_GWFND 754 0001

I have already seen multiple posts on SCN showing this in very simple and straight way but somehow none is working for me...

Problem :

When I am trying to run Gateway service in multiple ways, I am not getting data back instead getting below errors:

The simple requirement is to get an working Gateway service generated from CDS View with Parameter.

Thanks-

Abhishek