Why is Consumer BSSV generating XML payload with namespace prefix missing for request parameters?

JD Edwards EnterpriseOne, Application Release E920 , Tools Release 9.2.5.1

I have created a custom BSSV object using JAX-WS to consume a SOAP API. I created a proxy using the WSDL link provided to me. The proxy folder has a "....porttype.java" file that contains information about request wrapper, response wrapper and their namespaces, also the parameter namespaces.

I test this proxy by assigning parameter values to java variables and passing the variables into a call to xxxport.concernedMethod(inpurvar1, inputvar2, and so on)

I get a fault string exception from the server due to the missing namespace prefix for the request parameters. The reason is faulty XML payload generated by my BSSV class.