Barcodes This page contains everything you need to get started. Do you have any questions? Our customer support is ready for you via +31 (0)20 511 38 88. Codes for articles EAN-13/GTIN-13 EAN-8/GTIN-8 When is a new GTIN required? Barcode symbols All symbols Codes for locations Global Location Number (GLN) Codes for locations Efficient supply chain Guideline automated distribution centre For healthcare How to make a UDI? Application identifiers GMN for basic UDI-DI For agriculture & fresh Allocate a GTIN to potatoes, fruits and vegetables Allocate a GLN to potatoes, fruits and vegetables Legal obligations labels potatoes, fruits and vegetables