Invalid ticket id

Invalid ticket id

Hi, im trying to connect to the Api but when i do a call i receive this message:

{"response":{"error":{"message":"Invalid Ticket Id","code":"4834"},"uri":"/crm/private/json/Accounts/insertRecords"}}

and I send:
https://crm.zoho.com/crm/private/json/Accounts/insertRecords?authtoken=<authtoken>&scope=crmapi&newFormat=2&xmlData=<?xml version="1.0" encoding="UTF-8" ?><Accounts><Account_Name type="str">prueba desde python</Account_Name></Accounts>

I tried to get a ticket from  https://accounts.zoho.com/login  but the response was the method was discontinued.