To Start sending "Session Messages", the first incoming message from the receiver is mandatory else "Ticket Expired" error will be displayed.
URL : https://{{url}}/v5/api/session.php
{
"brodcast_service":"whatsapp_credits",
"contacts": "918878588599",
"location": "1", //1 is mandatory
"longitude":"20",
"latitude":"30",
"name":"Location",
"address":"India"
}