There are three types of data in the GS1 System that can be exchanged.
Master data is a set of defined information attributes that describes a product, for example, its height, width and depth. The GS1 Global Data Synchronization Network (GDSN) allows trading partners to access and exchange product master data in real-time. Product master data is entered into a GDSN-certified data pool.
Transactional data includes business messages that are shared between trading partners throughout the supply chain, such as invoices, orders and delivery notes.
Event data is a record of physical events in business processes such as shipping, receiving and picking and is shared between trading partners.
More information GS1 standards and manuals.