---
title: NSPersistentStoreStagedMigrationManagerOptionKey
framework: coredata
role: symbol
role_heading: Global Variable
path: coredata/nspersistentstorestagedmigrationmanageroptionkey
---

# NSPersistentStoreStagedMigrationManagerOptionKey

The key for specifying your staged migration manager.

## Declaration

```swift
let NSPersistentStoreStagedMigrationManagerOptionKey: String
```

## See Also

### Migration staging

- [NSStagedMigrationManager](coredata/nsstagedmigrationmanager.md)