The Indian e-Visa Application is completed online through India's official visa portal. Before starting, have your passport, recent photograph, and any documents required for your particular visa category ready. The application asks for personal, passport, and travel information, so it is important to enter everything accurately.
Take your time when checking the form before submitting it. India's official instructions state that information should be provided exactly as requested, and further modifications are not allowed after submission. Keep the application ID generated after submission because it may be needed for checking the application or communicating about it.
After approval, carry a copy of your Electronic Travel Authorisation when travelling and confirm that the status shows as GRANTED before your journey.