REQUEST: POST /stkV3/InteropC.wsdl HTTP/1.1 Host: mssoapinterop.org Connection: Keep-Alive User-Agent: EasySoap++/0.6 Content-Type: text/xml; charset="UTF-8" SOAPAction: "http://soapinterop.org/" Content-Length: 631 This is a string in the header RESPONSE: HTTP/1.1 100 Continue Server: Microsoft-IIS/5.0 Date: Sat, 01 Dec 2001 00:37:04 GMT RESPONSE: HTTP/1.1 200 OK Server: Microsoft-IIS/5.0 Date: Sat, 01 Dec 2001 00:37:04 GMT Content-Type: text/xml Content-Length: 1311 Expires: -1; SOAP-ENV:MustUnderstandServer:An element with a MustUnderstand attribute was not understood.http://mssoapinterop.org/stk/InteropC.wsdl-2146821188Server:An element with a MustUnderstand attribute was not understood. HRESULT=0x800A1BBCServerAn element with a MustUnderstand attribute was not understood.-2146821188