The data model
Read everything you need to know about the data model on this page.
The bol data model
Stay informed about the latest item classifications on bol, which is how items are categorized into product groups, and mandatory attributes. An attribute is an item characteristic that is filled in alongside the title and item description.
You can find the data model here, and it is updated quarterly. Use this model to ensure that no content is missing from your product range. Below, you will find an overview of the current data model and the most recent changes.
When does the data model change?
Important changes to mandatory content and the categorization of items into product groups are shared quarterly in the data model. Once a quarter, we send an update with these latest changes. The overview below is active as of May 19, 2026.