To verify that WSAPI is available on a Operations Center Server:
In a Web browser, navigate to the WSDL:
http://OperationsCenterServerAddress:WebServicePort/wsapi/services/Moswsapi_1_0?wsdl
The interface point for WSAPI 1.1 itself is at:
http://OperationsCenterServerAddress:WebServicePort/wsapi/services/Moswsapi_1_1
The WSDL Web page displays, indicating that WSAPI is available on your server: