GS1 Global Standards - Supply Chain Traceability and Data Security IdentificationKeys-AIs-GTIN-GLN-SSCC: GS1 Identification Keys (GTIN, GLN, SSCC, GRAI, GIAI, GSRN, GDTI, GINC, GSIN, GCN, CPID, GMN) and Application Identifiers (AIs)

GS1 IDENTIFICATION KEYS comprise the foundational unique identifiers covering all supply chain entities. (1) GTIN (Global Trade Item Number) - identifies trade items (products); 4 formats: GTIN-8 (8 digits, small items), GTIN-12 (12 digits, formerly UPC-A, US/Canada), GTIN-13 (13 digits, formerly EAN-13, global), GTIN-14 (14 digits, packaging hierarchy + indicator digit 0-9); each GTIN consists of GS1 Company Prefix + Item Reference + Check Digit; ~5 BILLION GTINs allocated globally. (2) GLN (Global Location Number) - identifies physical + functional + legal entity locations (warehouses + stores + corporate office + sub-locations + departments + bill-to + ship-to); 13-digit format; foundational to logistics + invoicing. (3) SSCC (Serial Shipping Container Code) - identifies logistic units (pallets + cases + containers + roll cages + parcels); 18-digit format; serialized + unique-per-pallet. (4) GRAI (Global Returnable Asset Identifier) - returnable assets (pallets + crates + kegs + roll cages + reusable transport items). (5) GIAI (Global Individual Asset Identifier) - fixed individual assets (vehicles + equipment + tools). (6) GSRN (Global Service Relation Number) - service relationships (subscribers + patient + member + caregiver). (7) GDTI (Global Document Type Identifier) - identifies documents. (8) GINC (Global Identification Number for Consignment) - logistics consignments. (9) GSIN (Global Shipment Identification Number) - shipments. (10) GCN (Global Coupon Number) - coupons. (11) CPID (Component Part Identifier) - automotive + manufacturing components. (12) GMN (Global Model Number) - regulated product models. APPLICATION IDENTIFIERS (AIs): 100+ standardized prefix codes preceding data elements in GS1 barcodes; common AIs include AI 01 GTIN + AI 02 Container-Content + AI 10 Batch/Lot + AI 11 Production Date + AI 13 Pack Date + AI 15 Best Before + AI 17 Expiry Date + AI 21 Serial Number + AI 22 Variant + AI 240 Additional Item ID + AI 30 Variable Count + AI 310-329 Weights/Dimensions + AI 414 GLN Physical Location + AI 92-99 Custom; AIs allow multiple data elements in a single barcode + structured parsing.