customs clearance

US /ˈkʌstəmz ˌklɪr.əns/
UK /ˈkʌstəmz ˌklɪr.əns/
"customs clearance" picture
1.

the process of getting official permission for goods to enter or leave a country

:
The shipment was delayed due to issues with customs clearance.
You need to complete all the necessary documents for customs clearance.