Checkout, Payments & Conversion
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Common Questions
Can we prototype a discount-stacking or validation rule using Shopify Flow first, before committing budget to a custom Function build?
Shopify documents Functions, not Flow, as the mechanism for checkout backend logic, so Flow cannot stand in for a discount or validation rule. Flow is a free triggers, conditions and actions automation app on Basic, Grow, Advanced and Plus (Shopify Help Center, September 2026). Run Flow first to prove your tags and metafields are populated.
If our custom shipping-rate Function needs updating every time we add a new fulfillment location, does that ongoing cost make a simpler native rule table a better long-term choice?
A shipping Function that needs a code change per new location was scoped wrong, not chosen wrong. Read locations from configuration and a new warehouse becomes a data edit. Shopify allows up to 99 custom shipping profiles plus the general profile (Shopify Help Center, September 2026), which is the ceiling that decides whether native rules can carry the logic instead.