New fiscalDeviceIdentifier field on PointOfSaleDevice
Shopify developer change
MerchantDiff detected this entry in Shopify's official developer changelog on October 01, 2026.
This Shopify update is categorized as API, New, GraphQL Admin API, 2026-10.
What changed
The PointOfSaleDevice object in the GraphQL Admin API now includes a nullable fiscalDeviceIdentifier field. It returns the Shopify-assigned fiscal register identifier for the device, for example Sweden's manufacturing number (tillverkningsnummer) that merchants register with the Swedish Tax Agency (Skatteverket). For details, see the PointOfSaleDevice reference. The field returns a value only for devices at locations in countries whose fiscal regulations require registering the cash register with the tax authority. Sweden is the first supported country.
Who is affected
Apps that support in-person fiscal compliance workflows, such as fiscal transaction signing and journal reporting in countries that require registered cash registers, can use this field. Apps that don't work with POS fiscal compliance aren't affected and don't need to take action.
What action may be needed
Query the field on the 2026-10 GraphQL Admin API version: query { pointOfSaleDevice(id: "gid://shopify/PointOfSaleDevice/123") { fiscalDeviceIdentifier } } This query returns the fiscal register identifier for the device, or null when the device's location doesn't require one. To identify the device that your POS UI extension is running on, use session.deviceId, available in POS UI Extensions API 2026-04 and later, and query the GraphQL Admin API with that ID.
Use the official Shopify entry below as the source of truth for technical implementation details, affected APIs, migration instructions and deadlines.
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