Not getting actual response for a SOAP service. Getting "A WSDL was requested for a Web Service that does not exist.."

My question: When I try to run one SOAP service it gives status 400 which is a success. but not giving the actual response which we got from the SOAP UI tool.

Details (like screenshots): POSTMAN API screenshot:

SOAP UI Screenshot

SOAP end point: https://imservices-qa1-usch01.corporate.ingrammicro.com:9043/RMASearch_v1_0_vs0

Postman collection: