September 17, 2026 Action / breaking change

Removed session.currentSession.staffMemberId from POS UI Extensions (2026-10)

Action RequiredAPIBreaking API ChangePOS Extensions2026-10

Shopify developer change

MerchantDiff detected this entry in Shopify's official developer changelog on September 17, 2026.

This Shopify update is categorized as Action Required, API, Breaking API Change, POS Extensions, 2026-10.

Use the official Shopify entry below as the source of truth for technical implementation details, affected APIs, migration instructions and deadlines.

Official source

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