---
title: CMClock Error Codes
framework: coremedia
role: collectionGroup
role_heading: API Collection
path: coremedia/cmclock-error-codes
---

# CMClock Error Codes

Constants that represent the errors in Core Media clock operations.

## Topics

### Constants

- [kCMClockError_MissingRequiredParameter](coremedia/kcmclockerror_missingrequiredparameter.md)
- [kCMClockError_InvalidParameter](coremedia/kcmclockerror_invalidparameter.md)
- [kCMClockError_AllocationFailed](coremedia/kcmclockerror_allocationfailed.md)
- [kCMClockError_UnsupportedOperation](coremedia/kcmclockerror_unsupportedoperation.md)

## See Also

### Constants

- [CMTimebase Error Codes](coremedia/cmtimebase-errors.md)
- [CMSync error codes](coremedia/cmsync-error-codes.md)
- [Timebase Notifications](coremedia/timebase-notifications.md)