---
title: entityMigrationPolicyClassName
framework: coredata
role: symbol
role_heading: Instance Property
path: coredata/nsentitymapping/entitymigrationpolicyclassname
---

# entityMigrationPolicyClassName

The class name of the migration policy for the entity mapping.

## Declaration

```swift
var entityMigrationPolicyClassName: String? { get set }
```

## Discussion

Discussion If not specified, the default migration class name is NSEntityMigrationPolicy. You can specify a subclass to provide custom behavior.

## See Also

### Managing Mapping Information

- [name](coredata/nsentitymapping/name.md)
- [mappingType](coredata/nsentitymapping/mappingtype.md)
- [attributeMappings](coredata/nsentitymapping/attributemappings.md)
- [relationshipMappings](coredata/nsentitymapping/relationshipmappings.md)
- [userInfo](coredata/nsentitymapping/userinfo.md)