Metafields now require a definition to be accessed through the Customer Account API
Shopify developer change
MerchantDiff detected this entry in Shopify's official developer changelog on June 16, 2026.
This Shopify update is categorized as Action Required, Platform, Update.
Use the official Shopify entry below as the source of truth for technical implementation details, affected APIs, migration instructions and deadlines.
Official source
Want the actionable version?
MerchantDiff monitors Shopify API changes, deprecations, deadlines and ecosystem updates, then turns them into developer-focused release intelligence: what changed, who is affected and what action may be needed.
Get MerchantDiff →