---
title: NSExternalRecordExtensionOption
framework: coredata
role: symbol
role_heading: Global Variable
path: coredata/nsexternalrecordextensionoption
---

# NSExternalRecordExtensionOption

Option indicating the file extension to use for Spotlight external record files.

## Declaration

```swift
let NSExternalRecordExtensionOption: String
```

## See Also

### Deprecated

- [NSExternalRecordsDirectoryOption](coredata/nsexternalrecordsdirectoryoption.md)
- [NSExternalRecordsFileFormatOption](coredata/nsexternalrecordsfileformatoption.md)
- [NSPersistentStoreUbiquitousContentNameKey](coredata/nspersistentstoreubiquitouscontentnamekey.md)
- [NSPersistentStoreUbiquitousContentURLKey](coredata/nspersistentstoreubiquitouscontenturlkey.md)
- [NSPersistentStoreUbiquitousPeerTokenOption](coredata/nspersistentstoreubiquitouspeertokenoption.md)
- [NSPersistentStoreRemoveUbiquitousMetadataOption](coredata/nspersistentstoreremoveubiquitousmetadataoption.md)
- [NSPersistentStoreUbiquitousContainerIdentifierKey](coredata/nspersistentstoreubiquitouscontaineridentifierkey.md)
- [NSPersistentStoreRebuildFromUbiquitousContentOption](coredata/nspersistentstorerebuildfromubiquitouscontentoption.md)