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Deprecation of Product, Order, and Shipping Discount Function APIs

As of API version 2025-04, the following Function APIs are deprecated:

These APIs will be removed from all future stable and unstable API versions.

To replace these APIs, we've created the new Discount Function API, unifying the functionality of the previous APIs into a single extension.

If you use the existing APIs, before API version 2026-04 you'll need to update to the new Discount Function API. To learn how to do this, read the migration guide.

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