Error 4600 - When Inserting Leads to our Zoho Account via CRMAPI

Error 4600 - When Inserting Leads to our Zoho Account via CRMAPI

I am using VBScript as my programming environment and using  Msxml2.ServerXMLHTTP to send request for insertion from within the server using a background task.

Here's my code:

Dim xmlHTTP, strResponse
Dim oXMLDoc

    Set oXMLDoc = CreateObject("MSXML2.DOMDocument")
SET xmlHTTP = CreateObject ("Msxml2.ServerXMLHTTP")

Dim lResolve, lConnect, lSend, lReceive
lResolve = 10000
lConnect = 10000
lSend = 30000
lReceive = 0

xmlhttp.setTimeouts lResolve, lConnect, lSend, lReceive

'1. Inserting New Lead Fails:
'''''(Replace XXXXXXXXXXXXXX with the authcode)

Call xmlhttp.open("POST", "https://crm.zoho.com/crm/private/xml/Leads/insertRecords?newFormat=1&authtoken=XXXXXXXXXXXXXX &scope=crmapi&xmlData=" & strXMLDATA, false)

     call xmlHTTP.setRequestHeader ("Content-Type","application/x-www-form-urlencoded")

xmlHttp.send ()


2. If I try sending the xmlData in the Send function, the error still persists.
Call xmlhttp.open("POST", "https://crm.zoho.com/crm/private/xml/Leads/insertRecords?newFormat=1&authtoken=XXXXXXXXXXXXXX &scope=crmapi", false)

     call xmlHTTP.setRequestHeader ("Content-Type","application/x-www-form-urlencoded")

xmlHttp.send ("xmlData=" & strXMLDATA)


3. When I try to retrieve lead data using the below code, then it works. So there does not seem to be any connectivity issue. (Replace XXXXXXXXXXXXXX with the authcode)

Call xmlhttp.open("GET", "https://crm.zoho.com/crm/private/xml/Leads/getRecords?authtoken=XXXXXXXXXXXXXX&scope=crmapi&&selectColumns=Leads(First Name,Last Name,Email,Lead Owner)", false)
xmlHttp.send ()



Data Format being posted in strXMLDATA
         "<Leads><row no=""1"">" & _
"<FL val=""Lead Owner"">Test</FL>" & _
"<FL val=""First Name"">Randeep</FL>" & _
"<FL val=""Last Name"">Sawhney</FL>" & _
"<FL val=""Email""> randeep@nurture3.com</FL>" & _
"<FL val=""Phone"">04422334455</FL>" & _
"<FL val=""Mobile"">09999999999</FL>" & _
"<FL val=""Lead Source"">Verified Tracker - CV</FL>" & _
"<FL val=""Industry"">Financial Services, Oil & gas, Healthcare</FL>" & _
"<FL val=""Salutation"">Mr.</FL>" & _
"<FL val=""Country"">India</FL>" & _
"<FL val=""Description"">CV: http://www.careerintelligence.com/view-cv.aspx?cvid=1000000 / Desired Location: Sydney, Australia, India / Job Function: Operations / Current Salary:  $80000 - $120000pa  /  </FL>" & _
"</row></Leads>"

Query: 
a. Can you please help me to see what part of the format is wrong?