# Domain Migration – Octa Bills APIs
Octa Bills API domain is changing from
Octa Bills API services on the old domain
octa.in will stop working after 25/09/2021.
# What will stop working?
From 26/09/2021 onwards, all e-invoice API requests sent to the old domain
octa.in will stop working.
# What should I do?
Please update your application or library to use the new domain in all e-invoice API requests.
!!!WILL STOP WORKING AFTER 25/09/2021!!! https://bills.octa.in/api/einvoice/... ^^^^^^^
# I need help!
Sure! Contact us on WhatsApp/phone (+91-82093-27184) or email (email@example.com) if you need any assistance.