(a) A person must obtain a valid permit before commencing an activity for which a permit is required by this subchapter, except as provided in § 23.53 of this subchapter for retrospective permits for certain CITES shipments under very specific situations.(b) A person must apply for such a permit under the general permit procedures of this part and any other regulations in this subchapter that apply to the proposed activity. (1) The requirements of all applicable parts of this subchapter must be met.(2) A person may submit one application that includes the information required in each part of this subchapter, and a single permit will be issued if appropriate. 72 FR 48445 , Aug. 23, 2007