The obligation of the declarant to archive documents
The declarant should store the documents related to the declaration it has submitted to Customs, or the electronic data, from which the data of the declaration has been obtained. These documents to be archived include, for example, transport documents entered in the (entry) summary declaration.
All the documents may be stored electronically. The period for which the documents must be stored is the current year plus 3 years. No response messages of Customs need be archived, unless archiving is legally required or stipulated by other documents.