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# CheckoutAddressCustomField

GraphQL interface

Custom field of the checkout address.

Reference: https://docs.bigcommerce.com/developer/api-reference/graphql/storefront/types/interfaces/checkout-address-custom-field

## Fields

- `entityId` — Custom field ID.

## Implemented by

- CheckoutAddressCheckboxesCustomField
- CheckoutAddressDateCustomField
- CheckoutAddressMultipleChoiceCustomField
- CheckoutAddressNumberCustomField
- CheckoutAddressPasswordCustomField
- CheckoutAddressTextFieldCustomField

## Definition

```graphql
interface CheckoutAddressCustomField {
  entityId: Int!
}
```