| Name | Type | Description | Notes |
|---|---|---|---|
| id | string | Identifier of the billing document to which the credit memo, payment, or refund is applied. | |
| type | string | The type of billing document. | |
| amount | decimal | The amount applied to this billing document. | |
| billing_document_number | string | A human-readable identifier for the billing document; may be user-supplied. | [optional] [readonly] |
| items | List<BillingDocumentItemPaymentApplicationRequest> | The billing document items (invoice items or debit memo items or taxation items) to which the payment is applied. | [optional] |