Global Trade Item Number (GTIN) can be used by a company to uniquely identify all of its trade items. GS1 defines trade items as products or services that are priced, ordered or invoiced at any point in the supply chain. See how GTIN works>
You will find relevant application standards and guidelines listed below:
GS1 GTIN Management Standard website
GS1 GTIN Management Standard - PDF
GTIN Management Standard Summary - PDF