Restriction Codes and Annulment Procedure  What is a Restriction Code? Restriction codes for foreigners are administrative measures designed to control the entry and exit of foreign nationals to and from Türkiye. Through these codes, foreigners may be subjected to entry bans or pre-authorization requirements. Additionally, these codes enable the deportation of foreign nationals on grounds such as public security, public health, or public order. Restriction codes are categorized according to their intended purposes and are denoted...