GS1 GDSN (Global Data Synchronization Network) is the global B2B network for master-data sharing + synchronization between trading partners. GDSN ARCHITECTURE: (a) GS1 Source - GS1-certified data pools where data publishers + suppliers register + maintain product master data; (b) GS1 Sink - data pools where retailers + buyers access subscribed product data; (c) GDSN MESH - global certified network connecting data pools across MOs + countries; (d) GLOBAL REGISTRY - GS1 Global Registry coordinates global GTIN + GLN uniqueness + cross-pool routing. CERTIFIED DATA POOLS (~30+ globally): 1WorldSync + Atrify + ECC AG + GS1 Mexico + GS1 South Korea + GS1 China + Stibo Systems + Brandbank + Tellium + many more; each meets GS1 certification + interoperability standards. MASTER DATA COVERED: ~5,000+ attributes per GTIN organized in categories including identification + classification + dimensions + materials + nutritional + allergens + ingredients + claims + sustainability + packaging + handling + market + regulatory + supplier + manufacturer + brand + images + documents + serial + lot. SECTOR ATTRIBUTE GROUPS: GDSN sectoral attribute groups for grocery + healthcare + apparel + DIY + electronics + foodservice + other. PROCESS: publishers register/update master data in their data pool + GDSN propagates to subscribed sinks + subscribers receive Catalogue Item Notifications (CINs) + Catalogue Item Confirmations (CICs); ongoing data quality + validation + change tracking. GS1 EDI: traditional B2B EDI based on GS1 standards + GTIN + GLN identifiers; supports purchase orders + ASNs (Advance Shipping Notice) + invoices + acknowledgments + remittances + complaints + claims; EDI variants include GS1 EANCOM (Europe) + GS1 XML (modern) + GS1 WebForms (browser-based for SMEs); coordinates with X12/EDIFACT mainstream EDI standards. ADOPTION: ~30,000+ companies actively using GDSN; major retailers (Walmart + Costco + Tesco + Aldi + Carrefour + Lidl + Metro + Edeka + Mercadona + Loblaws + many others) mandate or strongly prefer GDSN for supplier master data.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.