# Fügt konfigurierbare Testangebote für Abonnementposten hinzu

## Das ändert sich

Fügt die Möglichkeit hinzu, Testangebote für Abonnementartikel mit der neuen [Trial Offers](https://docs.stripe.com/api/product-catalog/trial-offer.md?api-version=2026-03-25.preview) API zu erstellen und zu verwalten. Sie können einen [Preis](https://docs.stripe.com/api/product-catalog/trial-offer/object.md?api-version=2026-03-25.preview#product_catalog_trial_offer_object-price) zur Verwendung während des Testzeitraums und einen Preis zur Verwendung danach angeben. Sie können die [Dauer](https://docs.stripe.com/api/product-catalog/trial-offer/object.md?api-version=2026-03-25.preview#product_catalog_trial_offer_object-duration) eines Testzeitraums definieren, indem Sie einen Endzeitstempel festlegen oder eine Reihe von Preisintervallen angeben.

Fügt die Möglichkeit hinzu, einem Abonnementposten einen Testzeitraum zuzuweisen und gegebenenfalls einen Endzeitstempel mit der neuen Eigenschaft [current_trial](https://docs.stripe.com/api/subscription_items/create.md?api-version=2026-03-25.preview#create_subscription_item-current_trial) des Abonnementpostens anzugeben.

Fügt außerdem die Möglichkeit hinzu, durch Festlegen der neuen parameter [trial_settings.end_behavior.billing_cycle_anchor](https://docs.stripe.com/api/subscriptions/create.md?api-version=2026-03-25.preview#create_subscription-trial_settings-end_behavior-billing_cycle_anchor) zu steuern, ob der Abrechnungszyklusanker eines Abonnements am Ende eines Testzeitraums zurückgesetzt wird.

## Änderungen

#### REST API

|  | Change | Resource |
| --- | --- | --- |
|  | Added | [ProductCatalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Endpoint | Change | Resource |
| --- | --- | --- |
| `create` | Added | [ProductCatalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Parameters | Change | Resources or endpoints |
| --- | --- | --- |
| `trial_offer` | Added | [Invoice#create_preview.schedule_details.amendments[].item_actions[].add](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-add), [Invoice#create_preview.schedule_details.amendments[].item_actions[].set](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-set), [Invoice#create_preview.schedule_details.phases[].items[]](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-phases-items), [Quote#create.lines[].actions[].add_item](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-add_item), [Quote#create.lines[].actions[].set_items[]](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-set_items), [Quote#update.lines[].actions[].add_item](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-add_item), [Quote#update.lines[].actions[].set_items[]](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-set_items), [QuoteLine.actions[].add_item](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-add_item), [QuoteLine.actions[].set_items[]](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-set_items), `QuotePreviewSubscriptionSchedule.phases[].items[]`, [SubscriptionSchedule#amend.amendments[].item_actions[].add](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-add), [SubscriptionSchedule#amend.amendments[].item_actions[].set](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-set), [SubscriptionSchedule#create.phases[].items[]](/api/subscription_schedules/create?api-version=2026-03-25.preview#create_subscription_schedule-phases-items), [SubscriptionSchedule#update.phases[].items[]](/api/subscription_schedules/update?api-version=2026-03-25.preview#update_subscription_schedule-phases-items), [SubscriptionSchedule.phases[].items[]](/api/subscription_schedules/object?api-version=2026-03-25.preview#subscription_schedule_object-phases-items) |
| `current_trial` | Added | [Invoice#create_preview.subscription_details.items[]](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-subscription_details-items), [Subscription#create.items[]](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-items), [Subscription#update.items[]](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-items), [SubscriptionItem](/api/subscription_items/object?api-version=2026-03-25.preview), [SubscriptionItem#create](/api/subscription_items/create?api-version=2026-03-25.preview), [SubscriptionItem#update](/api/subscription_items/update?api-version=2026-03-25.preview) |
| `billing_cycle_anchor` | Added | [Subscription#create.trial_settings.end_behavior](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-trial_settings-end_behavior), [Subscription#update.trial_settings.end_behavior](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-trial_settings-end_behavior), [Subscription.trial_settings.end_behavior](/api/subscriptions/object?api-version=2026-03-25.preview#subscription_object-trial_settings-end_behavior) |

#### Ruby

|  | Change | Resource |
| --- | --- | --- |
|  | Added | [ProductCatalog::TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Method | Change | Resource |
| --- | --- | --- |
| `create` | Added | [ProductCatalog::TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Parameters | Change | Resources or methods |
| --- | --- | --- |
| `trial_offer` | Added | [InvoiceCreatePreviewParams::ScheduleDetail::Amendment::ItemAction::Add](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-add), [InvoiceCreatePreviewParams::ScheduleDetail::Amendment::ItemAction::Set](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-set), [InvoiceCreatePreviewParams::ScheduleDetail::Phase::Item](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-phases-items), [QuoteCreateParams::Line::Action::AddItem](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-add_item), [QuoteCreateParams::Line::Action::SetItem](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-set_items), [QuoteLine::Action::AddItem](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-add_item), [QuoteLine::Action::SetItem](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-set_items), `QuotePreviewSubscriptionSchedule::Phase::Item`, [QuoteUpdateParams::Line::Action::AddItem](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-add_item), [QuoteUpdateParams::Line::Action::SetItem](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-set_items), [SubscriptionSchedule::Phase::Item](/api/subscription_schedules/object?api-version=2026-03-25.preview#subscription_schedule_object-phases-items), [SubscriptionScheduleAmendParams::Amendment::ItemAction::Add](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-add), [SubscriptionScheduleAmendParams::Amendment::ItemAction::Set](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-set), [SubscriptionScheduleCreateParams::Phase::Item](/api/subscription_schedules/create?api-version=2026-03-25.preview#create_subscription_schedule-phases-items), [SubscriptionScheduleUpdateParams::Phase::Item](/api/subscription_schedules/update?api-version=2026-03-25.preview#update_subscription_schedule-phases-items) |
| `current_trial` | Added | [InvoiceCreatePreviewParams::SubscriptionDetail::Item](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-subscription_details-items), [SubscriptionCreateParams::Item](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-items), [SubscriptionItem](/api/subscription_items/object?api-version=2026-03-25.preview), [SubscriptionItemCreateParams](/api/subscription_items/create?api-version=2026-03-25.preview), [SubscriptionItemUpdateParams](/api/subscription_items/update?api-version=2026-03-25.preview), [SubscriptionUpdateParams::Item](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-items) |
| `billing_cycle_anchor` | Added | [Subscription::TrialSetting::EndBehavior](/api/subscriptions/object?api-version=2026-03-25.preview#subscription_object-trial_settings-end_behavior), [SubscriptionCreateParams::TrialSetting::EndBehavior](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-trial_settings-end_behavior), [SubscriptionUpdateParams::TrialSetting::EndBehavior](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-trial_settings-end_behavior) |

#### Python

|  | Change | Resource |
| --- | --- | --- |
|  | Added | [product_catalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Method | Change | Resource |
| --- | --- | --- |
| `create` | Added | [product_catalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Parameters | Change | Resources or methods |
| --- | --- | --- |
| `trial_offer` | Added | [InvoiceCreatePreviewParamsScheduleDetailAmendmentItemActionAdd](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-add), [InvoiceCreatePreviewParamsScheduleDetailAmendmentItemActionSet](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-set), [InvoiceCreatePreviewParamsScheduleDetailPhaseItem](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-phases-items), [QuoteCreateParamsLineActionAddItem](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-add_item), [QuoteCreateParamsLineActionSetItem](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-set_items), [QuoteLine.Action.AddItem](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-add_item), [QuoteLine.Action.SetItem](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-set_items), [QuoteModifyParamsLineActionAddItem](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-add_item), [QuoteModifyParamsLineActionSetItem](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-set_items), `QuotePreviewSubscriptionSchedule.Phase.Item`, [SubscriptionSchedule.Phase.Item](/api/subscription_schedules/object?api-version=2026-03-25.preview#subscription_schedule_object-phases-items), [SubscriptionScheduleAmendParamsAmendmentItemActionAdd](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-add), [SubscriptionScheduleAmendParamsAmendmentItemActionSet](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-set), [SubscriptionScheduleCreateParamsPhaseItem](/api/subscription_schedules/create?api-version=2026-03-25.preview#create_subscription_schedule-phases-items), [SubscriptionScheduleModifyParamsPhaseItem](/api/subscription_schedules/update?api-version=2026-03-25.preview#update_subscription_schedule-phases-items) |
| `current_trial` | Added | [InvoiceCreatePreviewParamsSubscriptionDetailItem](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-subscription_details-items), [SubscriptionCreateParamsItem](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-items), [SubscriptionItem](/api/subscription_items/object?api-version=2026-03-25.preview), [SubscriptionItemCreateParams](/api/subscription_items/create?api-version=2026-03-25.preview), [SubscriptionItemModifyParams](/api/subscription_items/update?api-version=2026-03-25.preview), [SubscriptionModifyParamsItem](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-items) |
| `billing_cycle_anchor` | Added | [Subscription.TrialSetting.EndBehavior](/api/subscriptions/object?api-version=2026-03-25.preview#subscription_object-trial_settings-end_behavior), [SubscriptionCreateParamsTrialSettingEndBehavior](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-trial_settings-end_behavior), [SubscriptionModifyParamsTrialSettingEndBehavior](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-trial_settings-end_behavior) |

#### PHP

|  | Change | Resource |
| --- | --- | --- |
|  | Added | [ProductCatalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Method | Change | Resource |
| --- | --- | --- |
| `create` | Added | [ProductCatalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Parameters | Change | Resources or methods |
| --- | --- | --- |
| `trial_offer` | Added | [Invoice.create_preview().$params.schedule_detail.amendment.item_action.add](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-add), [Invoice.create_preview().$params.schedule_detail.amendment.item_action.set](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-set), [Invoice.create_preview().$params.schedule_detail.phase.item](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-phases-items), [Quote.create().$params.line.action.add_item](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-add_item), [Quote.create().$params.line.action.set_item](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-set_items), [Quote.update().$params.line.action.add_item](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-add_item), [Quote.update().$params.line.action.set_item](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-set_items), [QuoteLine.actions[].add_item](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-add_item), [QuoteLine.actions[].set_items[]](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-set_items), `QuotePreviewSubscriptionSchedule.phases[].items[]`, [SubscriptionSchedule.amend().$params.amendment.item_action.add](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-add), [SubscriptionSchedule.amend().$params.amendment.item_action.set](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-set), [SubscriptionSchedule.create().$params.phase.item](/api/subscription_schedules/create?api-version=2026-03-25.preview#create_subscription_schedule-phases-items), [SubscriptionSchedule.phases[].items[]](/api/subscription_schedules/object?api-version=2026-03-25.preview#subscription_schedule_object-phases-items), [SubscriptionSchedule.update().$params.phase.item](/api/subscription_schedules/update?api-version=2026-03-25.preview#update_subscription_schedule-phases-items) |
| `current_trial` | Added | [Invoice.create_preview().$params.subscription_detail.item](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-subscription_details-items), [Subscription.create().$params.item](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-items), [Subscription.update().$params.item](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-items), [SubscriptionItem](/api/subscription_items/object?api-version=2026-03-25.preview), [SubscriptionItem.create().$params](/api/subscription_items/create?api-version=2026-03-25.preview), [SubscriptionItem.update().$params](/api/subscription_items/update?api-version=2026-03-25.preview) |
| `billing_cycle_anchor` | Added | [Subscription.create().$params.trial_setting.end_behavior](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-trial_settings-end_behavior), [Subscription.trial_settings.end_behavior](/api/subscriptions/object?api-version=2026-03-25.preview#subscription_object-trial_settings-end_behavior), [Subscription.update().$params.trial_setting.end_behavior](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-trial_settings-end_behavior) |

#### Java

|  | Change | Resource |
| --- | --- | --- |
|  | Added | [productcatalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Method | Change | Resource |
| --- | --- | --- |
| `create` | Added | [productcatalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Parameters | Change | Resources or methods |
| --- | --- | --- |
| `trialOffer` | Added | [InvoiceCreatePreviewParams.schedule_details.amendments[].item_actions[].add](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-add), [InvoiceCreatePreviewParams.schedule_details.amendments[].item_actions[].set](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-set), [InvoiceCreatePreviewParams.schedule_details.phases[].items[]](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-phases-items), [QuoteCreateParams.lines[].actions[].add_item](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-add_item), [QuoteCreateParams.lines[].actions[].set_items[]](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-set_items), [QuoteLine.actions[].add_item](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-add_item), [QuoteLine.actions[].set_items[]](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-set_items), `QuotePreviewSubscriptionSchedule.phases[].items[]`, [QuoteUpdateParams.lines[].actions[].add_item](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-add_item), [QuoteUpdateParams.lines[].actions[].set_items[]](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-set_items), [SubscriptionSchedule.phases[].items[]](/api/subscription_schedules/object?api-version=2026-03-25.preview#subscription_schedule_object-phases-items), [SubscriptionScheduleAmendParams.amendments[].item_actions[].add](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-add), [SubscriptionScheduleAmendParams.amendments[].item_actions[].set](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-set), [SubscriptionScheduleCreateParams.phases[].items[]](/api/subscription_schedules/create?api-version=2026-03-25.preview#create_subscription_schedule-phases-items), [SubscriptionScheduleUpdateParams.phases[].items[]](/api/subscription_schedules/update?api-version=2026-03-25.preview#update_subscription_schedule-phases-items) |
| `currentTrial` | Added | [InvoiceCreatePreviewParams.subscription_details.items[]](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-subscription_details-items), [SubscriptionCreateParams.items[]](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-items), [SubscriptionItem](/api/subscription_items/object?api-version=2026-03-25.preview), [SubscriptionItemCreateParams](/api/subscription_items/create?api-version=2026-03-25.preview), [SubscriptionItemUpdateParams](/api/subscription_items/update?api-version=2026-03-25.preview), [SubscriptionUpdateParams.items[]](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-items) |
| `billingCycleAnchor` | Added | [Subscription.trial_settings.end_behavior](/api/subscriptions/object?api-version=2026-03-25.preview#subscription_object-trial_settings-end_behavior), [SubscriptionCreateParams.trial_settings.end_behavior](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-trial_settings-end_behavior), [SubscriptionUpdateParams.trial_settings.end_behavior](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-trial_settings-end_behavior) |

#### Node.js

|  | Change | Resource |
| --- | --- | --- |
|  | Added | [ProductCatalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Method | Change | Resource |
| --- | --- | --- |
| `create` | Added | [ProductCatalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Parameters | Change | Resources or methods |
| --- | --- | --- |
| `trial_offer` | Added | [InvoiceCreatePreviewParams.schedule_details.amendments[].item_actions[].add](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-add), [InvoiceCreatePreviewParams.schedule_details.amendments[].item_actions[].set](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-set), [InvoiceCreatePreviewParams.schedule_details.phases[].items[]](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-phases-items), [QuoteCreateParams.lines[].actions[].add_item](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-add_item), [QuoteCreateParams.lines[].actions[].set_items[]](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-set_items), [QuoteLine.actions[].add_item](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-add_item), [QuoteLine.actions[].set_items[]](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-set_items), `QuotePreviewSubscriptionSchedule.phases[].items[]`, [QuoteUpdateParams.lines[].actions[].add_item](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-add_item), [QuoteUpdateParams.lines[].actions[].set_items[]](/api/quotes/update?api-version=2026-03-25.preview#update_quote-lines-actions-set_items), [SubscriptionSchedule.phases[].items[]](/api/subscription_schedules/object?api-version=2026-03-25.preview#subscription_schedule_object-phases-items), [SubscriptionScheduleAmendParams.amendments[].item_actions[].add](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-add), [SubscriptionScheduleAmendParams.amendments[].item_actions[].set](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-set), [SubscriptionScheduleCreateParams.phases[].items[]](/api/subscription_schedules/create?api-version=2026-03-25.preview#create_subscription_schedule-phases-items), [SubscriptionScheduleUpdateParams.phases[].items[]](/api/subscription_schedules/update?api-version=2026-03-25.preview#update_subscription_schedule-phases-items) |
| `current_trial` | Added | [InvoiceCreatePreviewParams.subscription_details.items[]](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-subscription_details-items), [SubscriptionCreateParams.items[]](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-items), [SubscriptionItem](/api/subscription_items/object?api-version=2026-03-25.preview), [SubscriptionItemCreateParams](/api/subscription_items/create?api-version=2026-03-25.preview), [SubscriptionItemUpdateParams](/api/subscription_items/update?api-version=2026-03-25.preview), [SubscriptionUpdateParams.items[]](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-items) |
| `billing_cycle_anchor` | Added | [Subscription.trial_settings.end_behavior](/api/subscriptions/object?api-version=2026-03-25.preview#subscription_object-trial_settings-end_behavior), [SubscriptionCreateParams.trial_settings.end_behavior](/api/subscriptions/create?api-version=2026-03-25.preview#create_subscription-trial_settings-end_behavior), [SubscriptionUpdateParams.trial_settings.end_behavior](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-trial_settings-end_behavior) |

#### Go

|  | Change | Resource |
| --- | --- | --- |
|  | Added | [ProductCatalogTrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Method | Change | Resource |
| --- | --- | --- |
| `New` | Added | [ProductCatalogTrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Parameters | Change | Resources or methods |
| --- | --- | --- |
| `TrialOffer` | Added | [InvoiceCreatePreviewScheduleDetailsAmendmentItemActionAddParams](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-add), [InvoiceCreatePreviewScheduleDetailsAmendmentItemActionSetParams](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-set), [InvoiceCreatePreviewScheduleDetailsPhaseItemParams](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-phases-items), [QuoteLineActionAddItem](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-add_item), [QuoteLineActionAddItemParams](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-add_item), [QuoteLineActionSetItemParams](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-set_items), [QuoteLineActionSetItems](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-set_items), `QuotePreviewSubscriptionSchedulePhaseItem`, [SubscriptionScheduleAmendAmendmentItemActionAddParams](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-add), [SubscriptionScheduleAmendAmendmentItemActionSetParams](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-set), [SubscriptionSchedulePhaseItem](/api/subscription_schedules/object?api-version=2026-03-25.preview#subscription_schedule_object-phases-items), [SubscriptionSchedulePhaseItemParams](/api/subscription_schedules/create?api-version=2026-03-25.preview#create_subscription_schedule-phases-items) |
| `CurrentTrial` | Added | [InvoiceCreatePreviewSubscriptionDetailsItemParams](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-subscription_details-items), [SubscriptionItem](/api/subscription_items/object?api-version=2026-03-25.preview), [SubscriptionItemParams](/api/subscription_items/update?api-version=2026-03-25.preview) |
| `BillingCycleAnchor` | Added | [SubscriptionTrialSettingsEndBehavior](/api/subscriptions/object?api-version=2026-03-25.preview#subscription_object-trial_settings-end_behavior), [SubscriptionTrialSettingsEndBehaviorParams](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-trial_settings-end_behavior) |

#### .NET

|  | Change | Resource |
| --- | --- | --- |
|  | Added | [ProductCatalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Method | Change | Resource |
| --- | --- | --- |
| `Create` | Added | [ProductCatalog.TrialOffer](/api/product-catalog/trial-offer/object?api-version=2026-03-25.preview) |

| Parameters | Change | Resources or methods |
| --- | --- | --- |
| `TrialOffer` | Added | [InvoiceScheduleDetailsAmendmentItemActionAddOptions](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-add), [InvoiceScheduleDetailsAmendmentItemActionSetOptions](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-amendments-item_actions-set), [InvoiceScheduleDetailsPhaseItemOptions](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-schedule_details-phases-items), [QuoteLine.Action.AddItem](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-add_item), [QuoteLine.Action.SetItems](/api/quote_lines/object?api-version=2026-03-25.preview#quote_line_object-actions-set_items), [QuoteLineActionAddItemOptions](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-add_item), [QuoteLineActionSetItemOptions](/api/quotes/create?api-version=2026-03-25.preview#create_quote-lines-actions-set_items), `QuotePreviewSubscriptionSchedule.Phase.Item`, [SubscriptionSchedule.Phase.Item](/api/subscription_schedules/object?api-version=2026-03-25.preview#subscription_schedule_object-phases-items), [SubscriptionScheduleAmendmentItemActionAddOptions](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-add), [SubscriptionScheduleAmendmentItemActionSetOptions](/api/subscription_schedules/amend?api-version=2026-03-25.preview#amend_subscription_schedule-amendments-item_actions-set), [SubscriptionSchedulePhaseItemOptions](/api/subscription_schedules/create?api-version=2026-03-25.preview#create_subscription_schedule-phases-items) |
| `CurrentTrial` | Added | [InvoiceSubscriptionDetailsItemOptions](/api/invoices/create_preview?api-version=2026-03-25.preview#create_invoice-subscription_details-items), [SubscriptionItem](/api/subscription_items/object?api-version=2026-03-25.preview), [SubscriptionItemCreateOptions](/api/subscription_items/create?api-version=2026-03-25.preview), [SubscriptionItemOptions](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-items), [SubscriptionItemUpdateOptions](/api/subscription_items/update?api-version=2026-03-25.preview) |
| `BillingCycleAnchor` | Added | [Subscription.TrialSettings.EndBehavior](/api/subscriptions/object?api-version=2026-03-25.preview#subscription_object-trial_settings-end_behavior), [SubscriptionTrialSettingsEndBehaviorOptions](/api/subscriptions/update?api-version=2026-03-25.preview#update_subscription-trial_settings-end_behavior) |

## Upgrade

#### REST API

1. [Zeigen Sie Ihre aktuelle API-Version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench an.
2. Wenn Sie ein SDK verwenden, aktualisieren Sie auf die entsprechende SDK-Version für diese API-Version.
   - Wenn Sie kein SDK verwenden, aktualisieren Sie Ihre [API-Anfragen](https://docs.stripe.com/api/versioning.md) auf `Stripe-Version: 2026-03-25.preview`
3. Aktualisieren Sie die für [Webhook-Endpoints](https://docs.stripe.com/webhooks/versioning.md) verwendete API-Version.
4. [Testen Sie Ihre Integration](https://docs.stripe.com/testing.md) mit der neuen Version.
5. Wenn Sie Connect verwenden, [testen Sie Ihre Connect-Integration](https://docs.stripe.com/connect/testing.md).
6. Führen Sie das [Upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade) in Workbench durch. Sie können [die Version für 72 Stunden zurücksetzen](https://docs.stripe.com/upgrades.md#roll-back-your-api-version).

Erfahren Sie mehr über [Stripe-API-Upgrades](https://docs.stripe.com/upgrades.md).

#### Ruby

1. [Zeigen Sie Ihre aktuelle API-Version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench an.
2. Aktualisieren Sie Ihr Ruby SDK auf die neueste Version.
3. Aktualisieren Sie die für [Webhook-Endpoints](https://docs.stripe.com/webhooks/versioning.md) verwendete API-Version.
4. [Testen Sie Ihre Integration](https://docs.stripe.com/testing.md) mit der neuen Version.
5. Wenn Sie Connect verwenden, [testen Sie Ihre Connect-Integration](https://docs.stripe.com/connect/testing.md).
6. Führen Sie das [Upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade) in Workbench durch. Sie können [die Version für 72 Stunden zurücksetzen](https://docs.stripe.com/upgrades.md#roll-back-your-api-version).

Erfahren Sie mehr über [Stripe-API-Upgrades](https://docs.stripe.com/upgrades.md).

#### Python

1. [Zeigen Sie Ihre aktuelle API-Version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench an.
2. Aktualisieren Sie Ihr Python SDK auf die neueste Version.
3. Aktualisieren Sie die für [Webhook-Endpoints](https://docs.stripe.com/webhooks/versioning.md) verwendete API-Version.
4. [Testen Sie Ihre Integration](https://docs.stripe.com/testing.md) mit der neuen Version.
5. Wenn Sie Connect verwenden, [testen Sie Ihre Connect-Integration](https://docs.stripe.com/connect/testing.md).
6. Führen Sie das [Upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade) in Workbench durch. Sie können [die Version für 72 Stunden zurücksetzen](https://docs.stripe.com/upgrades.md#roll-back-your-api-version).

Erfahren Sie mehr über [Stripe-API-Upgrades](https://docs.stripe.com/upgrades.md).

#### PHP

1. [Zeigen Sie Ihre aktuelle API-Version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench an.
2. Aktualisieren Sie Ihr PHP SDK auf die neueste Version.
3. Aktualisieren Sie die für [Webhook-Endpoints](https://docs.stripe.com/webhooks/versioning.md) verwendete API-Version.
4. [Testen Sie Ihre Integration](https://docs.stripe.com/testing.md) mit der neuen Version.
5. Wenn Sie Connect verwenden, [testen Sie Ihre Connect-Integration](https://docs.stripe.com/connect/testing.md).
6. Führen Sie das [Upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade) in Workbench durch. Sie können [die Version für 72 Stunden zurücksetzen](https://docs.stripe.com/upgrades.md#roll-back-your-api-version).

Erfahren Sie mehr über [Stripe-API-Upgrades](https://docs.stripe.com/upgrades.md).

#### Java

1. [Zeigen Sie Ihre aktuelle API-Version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench an.
2. Aktualisieren Sie Ihr Java SDK auf die neueste Version.
3. Aktualisieren Sie die für [Webhook-Endpoints](https://docs.stripe.com/webhooks/versioning.md) verwendete API-Version.
4. [Testen Sie Ihre Integration](https://docs.stripe.com/testing.md) mit der neuen Version.
5. Wenn Sie Connect verwenden, [testen Sie Ihre Connect-Integration](https://docs.stripe.com/connect/testing.md).
6. Führen Sie das [Upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade) in Workbench durch. Sie können [die Version für 72 Stunden zurücksetzen](https://docs.stripe.com/upgrades.md#roll-back-your-api-version).

Erfahren Sie mehr über [Stripe-API-Upgrades](https://docs.stripe.com/upgrades.md).

#### Node.js

1. [Zeigen Sie Ihre aktuelle API-Version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench an.
2. Aktualisieren Sie Ihr Node SDK auf die neueste Version.
3. Aktualisieren Sie die für [Webhook-Endpoints](https://docs.stripe.com/webhooks/versioning.md) verwendete API-Version.
4. [Testen Sie Ihre Integration](https://docs.stripe.com/testing.md) mit der neuen Version.
5. Wenn Sie Connect verwenden, [testen Sie Ihre Connect-Integration](https://docs.stripe.com/connect/testing.md).
6. Führen Sie das [Upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade) in Workbench durch. Sie können [die Version für 72 Stunden zurücksetzen](https://docs.stripe.com/upgrades.md#roll-back-your-api-version).

Erfahren Sie mehr über [Stripe-API-Upgrades](https://docs.stripe.com/upgrades.md).

#### Go

1. [Zeigen Sie Ihre aktuelle API-Version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench an.
2. Aktualisieren Sie Ihr Go SDK auf die neueste Version.
3. Aktualisieren Sie die für [Webhook-Endpoints](https://docs.stripe.com/webhooks/versioning.md) verwendete API-Version.
4. [Testen Sie Ihre Integration](https://docs.stripe.com/testing.md) mit der neuen Version.
5. Wenn Sie Connect verwenden, [testen Sie Ihre Connect-Integration](https://docs.stripe.com/connect/testing.md).
6. Führen Sie das [Upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade) in Workbench durch. Sie können [die Version für 72 Stunden zurücksetzen](https://docs.stripe.com/upgrades.md#roll-back-your-api-version).

Erfahren Sie mehr über [Stripe-API-Upgrades](https://docs.stripe.com/upgrades.md).

#### .NET

1. [Zeigen Sie Ihre aktuelle API-Version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench an.
2. Aktualisieren Sie Ihr .NET SDK auf die neueste Version.
3. Aktualisieren Sie die für [Webhook-Endpoints](https://docs.stripe.com/webhooks/versioning.md) verwendete API-Version.
4. [Testen Sie Ihre Integration](https://docs.stripe.com/testing.md) mit der neuen Version.
5. Wenn Sie Connect verwenden, [testen Sie Ihre Connect-Integration](https://docs.stripe.com/connect/testing.md).
6. Führen Sie das [Upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade) in Workbench durch. Sie können [die Version für 72 Stunden zurücksetzen](https://docs.stripe.com/upgrades.md#roll-back-your-api-version).

Erfahren Sie mehr über [Stripe-API-Upgrades](https://docs.stripe.com/upgrades.md).