| Dimension | Default / Custom | Scope |
| Item category | Google Analytics Default Dimension | Ecommerce > Item scoped |
| p_item_category | Custom Dimension | Event scoped |
As shown in the table above, Item category is a default dimension of GA, and p_item_category is a custom dimension created as needed.
Item category is collected for Ecommerce events, and other events are not displayed.
p_item_category is collected for product-related events, and other events are displayed as (not set).
- Item category : event_category exactly matches ecommerce
- p_item_category : event_category begins with product_