1. Children that are not variants of one product
The most common start. Products that belong together in a catalogue sense, grouped under one parent because they share a brand, a buyer or a use. The rule is narrower than any of those.
- Different product types sharing a parent because the brand is the same
- Accessories attached to the product they accessorise
- Materially different formulations grouped as if they were sizes
Each child has to be tested on its own: brand, product identity, attributes, and whether the difference between it and its siblings is one the category actually lists as a theme. A child that turns out to be a genuinely separate product needs its own record, which is an ASIN creation question.