19 CFR 10.707 - Maintenance of records.
(a)General. An importer claiming preferential tariff treatment for a good under § 10.703 of this subpart must maintain, for five years after the date of the claim for preferential tariff treatment, all records and documents necessary for the preparation of the declaration.
(b)Applicability of other recordkeeping requirements. The records and documents referred to in paragraph (a) of this section are in addition to any other records required to be made, kept, and made available to CBP under part 163 of this chapter.