Webservice error "Certificate is required to complete client authentication"

[pranjalipalkar]

Hi All,
I am getting error as "Certificate is required to complete client authentication" at the line oWinHttp.Send sSOAPRequest.

Following is the code I used.

Code:

'To reqd xml file
Set fso = CreateObject("Scripting.FileSystemObject")
Set Textfile= fso.OpenTextFile("C:\QTP\UpdateBusinessPartner.txt")
Do while Textfile.AtEndofStream <> True
      sSOAPRequest = Textfile.ReadAll()  
Loop

Set oWinHttp = CreateObject("WinHttp.WinHttpRequest.5.1")

'Open HTTP connection
oWinHttp.Open "POST", sWebServiceURL, False

  'Send SOAP request
  oWinHttp.Send  sSOAPRequest

Please let me know how to provide these certificates to QTP. I have the certificate file(.p12 file) with me.