Attribute-based bundles (e.g., bundles built using categories, tags, or other product attributes rather than specific product IDs) select products based on the bundle type and the page where the bundle is displayed.
This article explains what determines which products are shown — and when bundles fall back to best-selling items.
How Attribute-based Bundles Choose Products
Attribute-based bundles use a source product (when available) to generate cross-sell recommendations based on relationship score.
What is a “source product”?
A source product is the product the bundle uses as the anchor to decide which bundled items to recommend. Depending on the shopper’s context, the source product can come from:
The currently viewed product (on a PDP)
A product in the shopper’s cart
A recently bought product
If no source product exists, some bundle types fall back to best-selling products.
Triggered Bundles
Triggered bundles always use a source product.
On a Product Detail Page (PDP)
If the bundle is on a PDP, the bundle uses the currently viewed product as the source and serves cross-sell recommendations based on the relationship score.
On Other Page Types
On other page types, the source product is taken from:
Cart items, or
Recently bought items
The bundle then serves cross-sell recommendations based on the relationship score.
Generic Bundles
In Generic bundles, there is no source product, so the bundle uses best-selling products.