The filers are required to electronically file cargo information through the Nippon Automated Cargo and Port Consolidated System (NACCS). In case of difficulties in filing electronically, the filers need to file cargo information in writing by the deadline of filing according to the instruction of Japan Customs. Japan Customs operates the NACCS Center, which is a system for online processing of procedures taken with Japan Customs and other relevant administrative authorities or relevant private-sector services for arriving/ departing ships and aircrafts or import/export cargo.