LRN (Local Reference Number) is a registration number given automatically by the system, through which the transit declaration is prepared over the system by the main person in charge.MRN (Movement Reference Number) is a registration number given automatically by the system as a result of approval, registration and examination carried out by the departure administration regarding the transit declaration which has been granted a LRN.

It is the regime code used in declarations issued within the framework of national transit regime, namely in transit processes involved in departure and arrival administrations of Customs Territory of Turkey.

T1 and T2 codes are the codes stating under which status the good is carried. Accordingly, T1 represents the transit declaration covering common transit regime for the good outside of the European Union while T2 is used for the transit declaration covering common transit regime for the good in the European Union. In short, T1 is used in case of the transport of the good outside of the EU and T2 is used in case of the transport of the good in the EU.

It is a type of guarantee granted for the taxes to be occurred regarding the goods transported in transit operations and for other shipments. It is used pursuant to permission as it is a type of simplification. This reduced guarantee is deducted from the system once the guarantee is registered by the customs administration, and can be used when the arrival is notified again by the customs administration.

It is a type of certification based on the information on the transit declaration (if the declaration is inclusive of safety and security information) and printed from the computerized transit system to escort good. With this certification, there is no need for a summary declaration to be given at first entry into the European Union territories in transits from our country to the European countries, which are parties to Common Transit Agreement.

It is a type of certificate based on the information regarding transit declaration and printed from the computerized transit system to escort good. List of items and transit escort certificate are integral to each other.