---
title: Core Services Constants
framework: Core Services
role: collectionGroup
role_heading: API Collection
path: coreservices/core_services_constants
---

# Core Services Constants

## Topics

### Constants

- [kFSEventStreamEventExtendedDocIDKey](coreservices/kfseventstreameventextendeddocidkey.md)
- [kMDItemMediaExtensions](coreservices/kmditemmediaextensions.md)
- [kMDItemXMPCredit](coreservices/kmditemxmpcredit.md)
- [kMDItemXMPDigitalSourceType](coreservices/kmditemxmpdigitalsourcetype.md)