Returns are a serial-state problem
Saleable returns require knowing whether each returned GTIN+serial is still valid, who last held custody, and whether the product can re-enter commerce. Spreadsheets and email threads do not survive FDA-style inquiries.
Wholesalers need inbound return EPCIS, verification against the original ship event, and clean outbound ObjectEvents when product ships again. Pharmacies need VRS checks and quarantine paths when verification fails.
Wholesaler vs pharmacy paths
Wholesalers typically receive return EPCIS from customers, match to original outbound events, and regenerate ship documents when product is resold. Pharmacies verify at return intake and document suspect product workflows including FDA Form 3911 when required.
TracePharma keeps both paths in one tenant with role-appropriate screens—dock receiving for distributors, dispense-adjacent checks for pharmacies.
Audit questions to prepare for
Can you produce the chain of custody for a returned serial in under five minutes? Do you log verification outcomes with timestamps? Can compliance export return-related exceptions without IT ticket?