The Global Data Model, like an onion, consists of several layers.
GS1 Global Data Model
Global core (core)
Contains product features that apply to all products worldwide and is managed by the Global Maintenance Group.
Global category layer
Contains additional product attributes that can be populated globally for one or more product categories and is also managed by the Global Maintenance Group.
Regional category layer
Contains additional product characteristics which can be entered regionally for one or more product categories. If you only trade within the EU, the European layer will be suffient.
Because legislation differs from region to region, it may happen that certain product characteristics are legally required in one region but not in others. Depending on the regions you trade with, they must be used or not. The regions are: Europe, North America (USA, Canada, Mexico) and Australasia (Australia, New Zealand).
These layers are managed by the Regional Maintenance Groups. For the European layer, this is the European Maintenance Group.
Contains additional product characteristics that are additionally exchanged nationally. In most cases, the local level refers to a country or target market. For the Netherlands this is Benelux, as GS1 Netherlands and GS1 Belgium & Luxembourg manage one common data model.
The additional product characteristics are based on local legislation that does not transpose European legislation - as these are already covered in the European product category layer - or local business practices that differ from other countries. The ambition is to make that layer as small as possible, so that product information can be exchanged within Europe in the most uniform way possible. Managed by the Benelux Maintenance Group.
Impact of transition from Benelux data model to Global Data Model?
We have compared all fields and product attributes of the current Benelux data model with the fields of the global core, global product category layer and European product category layer of the Global Data Model. Fields that do occur in the Global Dat Model and not in the current Benelux data model will need to be filled in additionally.
For certain product characteristics different fields were used in different countries. Now it has been determined on a global or European level which is the only field that may still be used. Some fields will disappear and the values will have to be entered in new fields.
The remaining fields from the current Benelux data model that do not appear in the global core, global product category layer or European product category layer of the Global Data Model were simply not added to the local layer. Each field was critically evaluated and if it was found that it was not used within the chain, the decision was made to remove it from the data model.