---
title: MigrationStage
framework: swiftdata
role: symbol
role_heading: Enumeration
path: swiftdata/migrationstage
---

# MigrationStage

Describes a migration between two versions of the same schema.

## Declaration

```swift
enum MigrationStage
```

## Topics

### Migration stages

- [MigrationStage.lightweight(fromVersion:toVersion:)](swiftdata/migrationstage/lightweight(fromversion:toversion:).md)
- [MigrationStage.custom(fromVersion:toVersion:willMigrate:didMigrate:)](swiftdata/migrationstage/custom(fromversion:toversion:willmigrate:didmigrate:).md)

## Relationships

### Conforms To

- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Managing migration stages

- [stages](swiftdata/schemamigrationplan/stages.md)