Call Web Service with AJAX

[Member_15196138]

Hello I have web service solution in Visual Studio with one parameter :

Public Function CheckPalletInLocation(location As String) As String

    Dim ScaleConnnection As New SqlClient.SqlConnection("MYCONNEXION")
    Dim ScaleCommand As New SqlClient.SqlCommand
    ScaleCommand.Connection = ScaleConnnection
    ScaleConnnection.Open()
    ScaleCommand.CommandText = "SELECT DISTINCT LOGISTICS\_UNIT FROM LOCATION\_INVENTORY WHERE LOCATION = '" & 
    location & "'"
    Return ScaleCommand.ExecuteScalar()
    ScaleConnnection.Close()

    'Return "True"
End Function

When I launch solution, webservice works. It return value. Now I want to call it in HTML page with ajax code :

    TEST WEB SERVICE
	

PAGE


function Click\_BB()
{
	$.ajax({
	  type: 'post',
	  url: 'https://localhost:44341/WebService1.asmx?op=CheckPalletInLocation',
	  contentType: "application/xml",
	  data: { location: '110-01-03-10' },
	  success: function (d) 
		  {
			alert(d);
		  },
	  failure: function (response) 
		  {
			debugger;
			alert(response.d);
		  }
	});
}

I always have this error in the response page :

soap:ReceiverSystem.Web.Services.Protocols.SoapException: Le serveur n'a pas pu traiter la demande. ---> System.Xml.XmlException: Données non valides au niveau racine. Ligne 1, position 1.

I transale : server cannot process. Invalid data root, line 1 position 1

Can someone help please ?

Thanks