Legalization: What is it?
Legalization is a process of removing legal prohibition against something which is currently not legal.
Understanding Legalization
05th October 1961 – The day when few countries joined together and formed a group of countries which enjoy special rights and their respective documents can be used in any membership country without any hassles.
India is a HAGUE Convention Member since July 2005. If you are travelling to any hague nation then legalizing is not required for you.