405 Method Not Allowed - Dynamics GP 2010 Web Service - wcf

Question

I am trying to access my client's GP 2010 web service, but I get this error:
The request failed with HTTP status 405: Method Not Allowed.
The URL is http://www.xyz.com:48620/Dynamics/GPService
In Visual Studio, I see this URL in the add web reference box:
xyz:48620/Metadata/WCF/Full/schemas.microsoft.com.dynamics.gp.2010.01.wsdl
When I visit the URL in the browser, I can see the WSDL:
Here is the WSDL code:
http://pastebin.com/0VU7ZRbE
The customer has installed the GP2010 web service and it appears in the browser. I cannot add a reference to it in Visual Studio. The customer has added an inbound and an outbound firewall rule.
Am I using the wrong URL or is there something else to install?

Answer 1

When you add a web reference, you add localhost:48620/Dynamics/GPService . If you need to authenticate to another one, add change the URL:
// Create an instance of the service
DynamicsGP.Core.DynamicsGPService.DynamicsGP wsDynamicsGP = new DynamicsGP.Core.DynamicsGPService.DynamicsGP();
wsDynamicsGP.Url = "http://www.mysite.com:48620/DynamicsGPWebServices/DynamicsGPService.asmx";
// Be sure the default credentials are used
wsDynamicsGP.UseDefaultCredentials = true;
wsDynamicsGP.Credentials = new NetworkCredential("username", "password", "domain");
CompanyCriteria cc = new CompanyCriteria();
Company[] c = wsDynamicsGP.GetCompanyList(cc, new Context());
return wsDynamicsGP;