---
title: transactionIdentifier
framework: passkit
role: symbol
role_heading: Instance Property
path: passkit/pkpaymenttoken/transactionidentifier
---

# transactionIdentifier

A unique identifier for this payment.

## Declaration

```swift
var transactionIdentifier: String { get }
```

## Discussion

Discussion This identifier is suitable for use in a receipt.

## See Also

### Working with payment tokens

- [paymentData](passkit/pkpaymenttoken/paymentdata.md)
- [paymentMethod](passkit/pkpaymenttoken/paymentmethod.md)
- [PKPaymentMethod](passkit/pkpaymentmethod.md)