---
title: kCMBufferQueueError_InvalidCMBufferCallbacksStruct
framework: coremedia
role: symbol
role_heading: Global Variable
path: coremedia/kcmbufferqueueerror_invalidcmbuffercallbacksstruct
---

# kCMBufferQueueError_InvalidCMBufferCallbacksStruct

The format of a callbacks structure isn’t correct.

## Declaration

```swift
var kCMBufferQueueError_InvalidCMBufferCallbacksStruct: OSStatus { get }
```

## Discussion

Discussion Indicates that the version isn’t 0, or getDuration is NULL.

## See Also

### Error Codes

- [kCMBufferQueueError_AllocationFailed](coremedia/kcmbufferqueueerror_allocationfailed.md)
- [kCMBufferQueueError_RequiredParameterMissing](coremedia/kcmbufferqueueerror_requiredparametermissing.md)
- [kCMBufferQueueError_EnqueueAfterEndOfData](coremedia/kcmbufferqueueerror_enqueueafterendofdata.md)
- [kCMBufferQueueError_QueueIsFull](coremedia/kcmbufferqueueerror_queueisfull.md)
- [kCMBufferQueueError_BadTriggerDuration](coremedia/kcmbufferqueueerror_badtriggerduration.md)
- [kCMBufferQueueError_CannotModifyQueueFromTriggerCallback](coremedia/kcmbufferqueueerror_cannotmodifyqueuefromtriggercallback.md)
- [kCMBufferQueueError_InvalidTriggerCondition](coremedia/kcmbufferqueueerror_invalidtriggercondition.md)
- [kCMBufferQueueError_InvalidTriggerToken](coremedia/kcmbufferqueueerror_invalidtriggertoken.md)
- [kCMBufferQueueError_InvalidBuffer](coremedia/kcmbufferqueueerror_invalidbuffer.md)