Reasonable care in origin claims - importers must document origin compliance and risk triggering compulsory verification procedures. Procedural guidelines require importers to retain specified minimum information proving compliance with the Rules of Origin and to exercise reasonable care in origin claims; where information is deficient or care is lacking, authorities may invoke compulsory verification of subsequent consignments. Verification must follow standard operating procedures: seek information from the importer first, prepare comprehensive verification proposals approved by the jurisdictional commissioner, forward representative Certificates of Origin with supporting documents to the Board's designated nodal point, and monitor timelines and responses while using the ICES repository for specimen signatures/seals.