---
title: kCMBufferQueueError_CannotModifyQueueFromTriggerCallback
framework: coremedia
role: symbol
role_heading: Global Variable
path: coremedia/kcmbufferqueueerror_cannotmodifyqueuefromtriggercallback
---

# kCMBufferQueueError_CannotModifyQueueFromTriggerCallback

A trigger callback attempted to modify a queue.

## Declaration

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

## See Also

### Error Codes

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