Starting Friday, November 27, 2020, pharmacies must buy and sell only products with a required “product identifier” on their packages. This requirement is part of the phased-in implementation of the Drug Supply Chain Security Act of 2013 (DSCSA), also known as the “track-and-trace” law. By Friday, dispensers should be familiar with this requirement and know what to do if a product identifier is not on the package when they receive products that require it. The product identifier is on most drug packages in both human-readable format and on a machine-readable 2D data matrix barcode.