The State of Palestine has not joined the Hague Convention on the Simplified Authentication of Documents. This means that documents from Palestine cannot be legalized by apostille, they will only be recognized abroad after they undergo consular legalization.
Palestine is a partially recognized state in the Middle East, which is in the process of creation and formation, and currently enjoys bilateral recognition from 139 States. Palestine is not recognized by a number of countries, such as the USA, France, Great Britain, Israel, Japan, etc., but nevertheless is part of the Arab League, consisting of 22 Arab countries.