# Payment-OrderId

An order ID from your system. A unique identifier that can be used to reconcile the payment with your internal system. Up to 40 characters: ASCII letters, digits and `_ @ . / # & + -` (no spaces).

**string**Payment-OrderId

An order ID from your system. A unique identifier that can be used to reconcile the payment with your internal system. Up to 40 characters: ASCII letters, digits and `_ @ . / # & + -` (no spaces).

**Possible values:** `non-empty` and `<= 40 characters`, Value must match regular expression `^[a-zA-Z0-9_@./#&+-]{1,40}$`

**Example:<!-- -->&#x20;**`14379133960355`

Payment-OrderId

```
"14379133960355"
```