# invoice-date

###### Invoice date; defined by the merchant

➡ Request Parameter

## `<invoice-date>`

| Type | Condition | Restriction | Example |
|  --- | --- | --- | --- |
| xs:dateTime | Optional | - Earliest:7 days before`CONFIRMATION_DELIVER`- Latest:2 days after`CONFIRMATION_DELIVER` | `2023-12-31 12:34:56` |


If the merchant does not transmit an `<invoice-date>`, the Ratepay backend system will set the date of the **CONFIRMATION_DELIVER** event.