---
title: serverEnvironmentIdentifier
framework: passkit
role: symbol
role_heading: Instance Property
path: passkit/pkidentitydocumentmetadata/serverenvironmentidentifier
---

# serverEnvironmentIdentifier

An identifier that references the target server environment Apple Pay servers need to connect with to provision the pass.

## Declaration

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

## Discussion

Discussion If serverEnvironmentIdentifier isn’t present, the system uses the default Apply Pay server and returns an empty string.