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# Request: AmendRequest

> Use this reference to learn the AmendRequest objects and containers.

Use this reference to learn the AmendRequest objects and containers.

Pass an AmendRequest wrapper with the amend() call. `AmendRequest` is a wrapper that includes an object and containers.

## AmendRequest objects and containers

| Name                               | Required? | Description                                                           |
| ---------------------------------- | --------- | --------------------------------------------------------------------- |
| Amendment (object)                 | required  | Make changes on a subscription.                                       |
| AmendOptions (container)           | required  | Specify billing options.                                              |
| PreviewOptions (container)         | optional  | Preview an amendment before committing its changes to a subscription. |
| ExternalPaymentOptions (container) | optional  | Create or change a subscription and mark its invoice as already paid. |

## Containers

Containers go inside an `AmendRequest` wrapper.

See the following pages for container details:

* [AmendOptions](/docs/platform/integration/apis/soap-api/soap-api-calls/amend/amendrequest-objects-and-containers/amendoptions)
* [PreviewOptions](/docs/platform/integration/apis/soap-api/soap-api-calls/amend/amendrequest-objects-and-containers/previewoptions)
* [ExternalPaymentOptions](/docs/platform/integration/apis/soap-api/soap-api-calls/amend/amendrequest-objects-and-containers/externalpaymentoptions-fields)

> Use this reference to learn the AmendRequest objects and containers.

## Docs

- [AmendOptions for amend()](https://zuora.ferndocs.com/docs/platform/integration/apis/soap-api/soap-api-calls/amend/amendrequest-objects-and-containers/amendoptions.md): Use this reference to learn the AmendOptions container and its fields.
- [Additional field details](https://zuora.ferndocs.com/docs/platform/integration/apis/soap-api/soap-api-calls/amend/amendrequest-objects-and-containers/amendoptions/additional-details.md): Provides additional field details about InvoiceProcessingOptions and ProcessPayments.
- [PreviewOptions](https://zuora.ferndocs.com/docs/platform/integration/apis/soap-api/soap-api-calls/amend/amendrequest-objects-and-containers/previewoptions.md): Use the PreviewOptions container to preview an amendment before committing its changes to a subscription.
- [ExternalPaymentOptions](https://zuora.ferndocs.com/docs/platform/integration/apis/soap-api/soap-api-calls/amend/amendrequest-objects-and-containers/externalpaymentoptions-fields.md): Use the ExternalPaymentOptions container to create or change a subscription and mark its invoice as already paid.