| Name | Type | Description | Notes |
|---|---|---|---|
| Label | string | The label or title of the custom field. This field is required for a custom field. | [optional] [default to null] |
| Value | string | The text of the custom field. If omitted, only the label is rendered. | [optional] [default to null] |
| Placement | string | The location of the custom field on the invoice. This field is required for a custom field. See InvoiceCustomFieldPlacement for possible values | [optional] [default to null] |