---
title: "Public API v2 migration guide and deprecation timeline - Sign Customiser Changelog"
description: "Changelog: Public API v2 migration guide and deprecation timeline. Learn about the latest updates and improvements to Sign Customiser."
url: "https://www.signcustomiser.com/changelog/public-api-v2-deprecation-and-migration-guide/"
last_updated: "2026-10-22"
---

Sign Customiser’s previous-generation public API is now deprecated. Existing integrations continue to work, but developers should move to API v3 before the scheduled 22 January 2027 Sunset.

The new [v2 to v3 migration guide](/help/api/guides/migration-v2-to-v3/) maps every previous-generation operation to its v3 replacement. It also covers scoped Store-bound keys, pricing field changes, webhook subscriptions, order and product writes, error handling, pagination, and a safe cutover sequence that avoids duplicate writes.

Deprecated responses now include standard `Deprecation`, `Sunset`, and `Link` headers. These make the timeline and migration guide visible to API clients without changing existing response bodies, status codes, validation, or authentication behaviour.

- [feature](/changelog/tag/feature/)

Let your customers design their own signs

![Three custom sign types: neon, acrylic, and brushed metal letters](/_astro/sidebar-sign-showcase.9TDqJKD9_TbyVB.webp)

Add a full sign customiser to your online store in minutes. Neon, acrylic, metal — with real-time pricing.

[Start your free 7-day trial](/install/)

Works with Shopify, WooCommerce, Wix & more. 7 days free. Every plan includes every feature.

## Previousupdates

[View all updates](/changelog/)

- [July 17, 2026Sell in multiple languages from one customiserTranslate one customiser by hand or with AI, then show Shopify and Universal shoppers the right published language.feature](/changelog/sell-in-multiple-languages-from-one-customiser/)
- [July 15, 2026Custom sizes now open in your shopper's local unitsCustom-size inputs now start in inches or centimetres to match the shopper's active Shopify market, with no merchant setup required.feature](/changelog/custom-size-units-follow-shopper-region/)
- [July 15, 2026Choose how your customiser works on mobileEvery Sign Customiser customiser can now use either a stacked mobile layout or a focused step-by-step layout.feature](/changelog/choose-mobile-layout-for-every-customiser/)
- [July 15, 2026Better automatic sizing for Advanced customisersThe size lock now reliably returns manually resized signs to automatic, content-driven width.feature](/changelog/automatic-width-for-advanced-customisers/)

[View all updates](/changelog/)

## Sitemap

See the full [sitemap](/sitemap.md) for all pages.