The discussion focused on the challenges and solutions in the retail supply chain using EPCIS and serialized data. Key issues include claims, counterfeit products, and shrinkage. EPCIS, a standard for visibility systems, helps track and verify product shipments using RFID tags and barcodes. The conversation highlighted the importance of data integrity and the potential of blockchain and APIs for data exchange. Examples included Hanes and Walmart using serialized data to refute claims and improve inventory management. Resources from GS1 were recommended for further guidance on implementing these standards. The future of 2D barcodes and RFID integration was also discussed.