Shopify clarified its app-security enforcement schedule on October 27, then published a token-expiry FAQ on October 30. Public apps using legacy non-expiring offline access tokens have to migrate by January 1, 2027.

For sellers, the task is getting readiness confirmation from the vendors that move your orders, inventory, and business data. This is a dependency check, not evidence your apps are broken now.

January and April Are Different Milestones

Shopify's October 27 update sets three stages for noncompliant public apps.

January 1 brings App Store delisting and blocked new installations, while existing installations keep working. Merchant warnings begin January 15. On April 1, affected Admin API requests using old credentials return an HTTP 403 error.

January 1 is the migration deadline. April is the rejection milestone, not permission for vendors to delay their work.

The mandate excludes custom apps, merchant-created apps, and online access tokens. The October 30 FAQ also distinguishes Payments Apps API traffic from affected Admin API usage.

Scope matters here. Not every integration needs replacing, and not every piece of custom code in your store shares this deadline. Ask each provider which credential and API its specific workflow uses.

Your Storefront Can Work While Background Jobs Fail

An offline token lets an app perform work without a staff member actively using it. That makes the operational risk easy to miss: a storefront can load normally while an integration fails to update a fulfillment queue or inventory record.

Those are possible failure modes, not reported outages from this policy. Relevance depends on what your installed apps actually do.

Shopify's checkout migration showed the same testing principle on a different change: a working customer-facing page does not verify every downstream process.

Build your review around business functions rather than subscription cost. A cheap connector controlling stock availability deserves attention before an expensive design app with no fulfillment role.

Ask Vendors for Evidence, Not Assurance

Request written confirmation that existing installations have migrated, not just that new installations use the new authentication flow. Shopify's FAQ says explicitly that changing acquisition settings does not convert credentials an app already stored.

Ask whether background workers, queued tasks, and infrequent jobs have been tested. A provider may run several processes against the same store, and updating the visible interface does not prove every process changed.

Shopify's migration guide includes a route without a merchant session. So do not accept a blanket claim that every merchant must reopen or reinstall an app. Ask which supported flow the vendor uses and whether anything is genuinely required from you.

Avoid uninstalling a critical app to experiment. Understand first how the provider preserves settings, pending work, and historical data.

Test Full Workflows Before Holiday Staffing Thins

Pick a small controlled transaction and follow it through the systems you depend on. Confirm an order reaches the fulfillment destination, an inventory change returns correctly, and the records reconcile.

Include the exceptions you actually use, like cancellation or partial fulfillment. Write down expected results and assign someone to investigate differences. Do not use a live customer order as an unplanned test.

Ask vendors how you learn about authentication failures and who responds outside normal hours. If a connector stops, your team needs to know whether to pause, retry, or switch to a documented manual alternative without duplicating orders.

Shopify's app-security guidance also covers access controls, secrets, and monitoring. Treat it as a vendor-review reference rather than a promise that token migration alone makes an app secure.

Finish with an owner and a date for every unresolved vendor response. By January 1 you should know which public apps completed migration, which integrations fall outside the mandate, and what action remains.

If a warning appears in January, compare it against your vendor's evidence rather than waiting until April to find out whether background work still runs.