Updates Checkout Session UI mode enum values
Updates the ui_mode parameter for Checkout Sessions to use the following clearer, more descriptive enum values: Attempting to set a Checkout Session’s ui_mode to hosted, embedded, or custom will fail. If your integration uses any of those values, you must update your code to use the new ui_mode values.
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| [Updates Checkout Session UI mode enum values](https://docs.stripe.com/changelog/dahlia/2026-03-25/updates-available-checkout-session-ui-modes.md) | Checkout, Paymentlinks | Breaking | api |
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Attempting to set a Checkout Session’s `ui_mode` to `hosted`, `embedded`, or `custom` will fail. If your integration uses any of those values, you must update your code to use the new `ui_mode` values.
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