---
title: orderIdentifier
framework: passkit
role: symbol
role_heading: Instance Property
path: passkit/pkpaymentorderdetails/orderidentifier
---

# orderIdentifier

A unique order identifier scoped to your order type identifier.

## Declaration

```swift
var orderIdentifier: String { get set }
```

## See Also

### Identifying and authenticating the order

- [authenticationToken](passkit/pkpaymentorderdetails/authenticationtoken.md)
- [orderTypeIdentifier](passkit/pkpaymentorderdetails/ordertypeidentifier.md)
- [webServiceURL](passkit/pkpaymentorderdetails/webserviceurl.md)