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# 2.4.5.17 USB_DEVICE_AUDIO_V2_TRANSFER_HANDLE_INVALID Macro

## C

    #define USB_DEVICE_AUDIO_V2_TRANSFER_HANDLE_INVALID

## Summary

USB Device Audio v2.0 Function Driver Invalid Transfer Handle Definition

This definition defines a USB Device Audio v2.0 Function Driver Invalid Transfer Handle. A Invalid Transfer Handle is returned by the USB_DEVICE_Audio_V2_Write and USB_DEVICE_Audio_V2_Read functions when the request was not successful.

## Remarks

None.