---
title: merchantIdentifier
framework: passkit
role: symbol
role_heading: Instance Property
path: passkit/pkpaymenttokencontext/merchantidentifier
---

# merchantIdentifier

The Apply Pay merchant identifier.

## Declaration

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

## Discussion

Discussion The merchant identifier you provide when you make an Apple Pay payment request. If you request a payment token for another merchant, use their merchant identifier if available. Otherwise, use your own merchant identifier. For more information about merchant identifiers, see Setting up Apple Pay.

## See Also

### Specifying the merchant

- [merchantDomain](passkit/pkpaymenttokencontext/merchantdomain.md)
- [merchantName](passkit/pkpaymenttokencontext/merchantname.md)
- [externalIdentifier](passkit/pkpaymenttokencontext/externalidentifier.md)