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# Introduction

The Models section has the following topics:

* [Contact Object](/afterpay-online-developer/v-1/api-reference/models/contact-object)
* [Consumer Object](/afterpay-online-developer/v-1/api-reference/models/consumer-object)
* [Discount Object](/afterpay-online-developer/v-1/api-reference/models/discount-object)
* [Item Object](/afterpay-online-developer/v-1/api-reference/models/item-object)
* [Money Object](/afterpay-online-developer/v-1/api-reference/models/money-object)
* [Order Details Object](/afterpay-online-developer/v-1/api-reference/models/order-details-object)
* [Payment Object](/afterpay-online-developer/v-1/api-reference/models/payment-object)
* [Refund Object](/afterpay-online-developer/v-1/api-reference/models/refund-object)
* [Shipping courier Object](/afterpay-online-developer/v-1/api-reference/models/shipping-courier-object)