Levy of fees governs charges for amendments, cancellations and certified copies of customs documents including electronic revisions. Regulation 3 prescribes the levy of fees on customs documents by listing specific purposes and corresponding rates in a Table, covering amendments to manifests, shipping bills, port clearance and outward entry applications, supplementation of short shipment notices, cancellations, and supply of certified copies; it distinguishes amendments of prior bills of entry and incorporates entries for automated mismatch handling between shipping bills and GST returns and for electronic voluntary revision applications, with notes recording historical substitutions and insertions affecting the current fee schedule.