Guides

Short, practical answers about variant inventory in Shopify, and how Douplo fits in.

How to sync inventory across Shopify variants

Shopify tracks stock per variant, so changing one variant leaves the rest unchanged. Here is how to keep the variants of a product at the same stock.

Why Shopify variant inventory gets out of sync, and how to fix it

Variant stock drifts apart because every sale, edit and import changes only one variant. Learn the common causes and how to keep the numbers matching.

Share one stock pool between Shopify variants

Shopify has no setting that makes variants draw from one stock pool. Compare the realistic options and what each one costs you.