Service ID is a unique ID given to you based on your subscribed services with TM. It can be found at your TM bill.
Always have enough with these add-on options
*Price shown is inclusive of 6% Service Tax
Login to unifi Selfcare
Check data usage
Select add-on passes
Make a payment
Your ID is mainly for verification purposes and all the services which are tied to the ID entered will be returned. Only validated ID will be authorized to manage the services and their billing.