---
title: BluetoothHCIError constants
framework: IOBluetooth
role: collectionGroup
role_heading: API Collection
path: iobluetooth/bluetoothhcierror-constants-9nq10
---

# BluetoothHCIError constants

## Topics

### Constants

- [kBluetoothHCIErrorACLConnectionAlreadyExists](iobluetooth/kbluetoothhcierroraclconnectionalreadyexists.md)
- [kBluetoothHCIErrorAuthenticationFailure](iobluetooth/kbluetoothhcierrorauthenticationfailure.md)
- [kBluetoothHCIErrorChannelClassificationNotSupported](iobluetooth/kbluetoothhcierrorchannelclassificationnotsupported.md)
- [kBluetoothHCIErrorCommandDisallowed](iobluetooth/kbluetoothhcierrorcommanddisallowed.md)
- [kBluetoothHCIErrorConnectionFailedToBeEstablished](iobluetooth/kbluetoothhcierrorconnectionfailedtobeestablished.md)
- [kBluetoothHCIErrorConnectionRejectedDueToNoSuitableChannelFound](iobluetooth/kbluetoothhcierrorconnectionrejectedduetonosuitablechannelfound.md)
- [kBluetoothHCIErrorConnectionTerminatedByLocalHost](iobluetooth/kbluetoothhcierrorconnectionterminatedbylocalhost.md)
- [kBluetoothHCIErrorConnectionTerminatedDueToMICFailure](iobluetooth/kbluetoothhcierrorconnectionterminatedduetomicfailure.md)
- [kBluetoothHCIErrorConnectionTimeout](iobluetooth/kbluetoothhcierrorconnectiontimeout.md)
- [kBluetoothHCIErrorControllerBusy](iobluetooth/kbluetoothhcierrorcontrollerbusy.md)
- [kBluetoothHCIErrorDifferentTransactionCollision](iobluetooth/kbluetoothhcierrordifferenttransactioncollision.md)
- [kBluetoothHCIErrorDirectedAdvertisingTimeout](iobluetooth/kbluetoothhcierrordirectedadvertisingtimeout.md)
- [kBluetoothHCIErrorEncryptionModeNotAcceptable](iobluetooth/kbluetoothhcierrorencryptionmodenotacceptable.md)
- [kBluetoothHCIErrorExtendedInquiryResponseTooLarge](iobluetooth/kbluetoothhcierrorextendedinquiryresponsetoolarge.md)
- [kBluetoothHCIErrorHardwareFailure](iobluetooth/kbluetoothhcierrorhardwarefailure.md)
- [kBluetoothHCIErrorHostBusyPairing](iobluetooth/kbluetoothhcierrorhostbusypairing.md)
- [kBluetoothHCIErrorHostRejectedLimitedResources](iobluetooth/kbluetoothhcierrorhostrejectedlimitedresources.md)
- [kBluetoothHCIErrorHostRejectedRemoteDeviceIsPersonal](iobluetooth/kbluetoothhcierrorhostrejectedremotedeviceispersonal.md)
- [kBluetoothHCIErrorHostRejectedSecurityReasons](iobluetooth/kbluetoothhcierrorhostrejectedsecurityreasons.md)
- [kBluetoothHCIErrorHostRejectedUnacceptableDeviceAddress](iobluetooth/kbluetoothhcierrorhostrejectedunacceptabledeviceaddress.md)
- [kBluetoothHCIErrorHostTimeout](iobluetooth/kbluetoothhcierrorhosttimeout.md)
- [kBluetoothHCIErrorInstantPassed](iobluetooth/kbluetoothhcierrorinstantpassed.md)
- [kBluetoothHCIErrorInsufficientSecurity](iobluetooth/kbluetoothhcierrorinsufficientsecurity.md)
- [kBluetoothHCIErrorInvalidHCICommandParameters](iobluetooth/kbluetoothhcierrorinvalidhcicommandparameters.md)
- [kBluetoothHCIErrorInvalidLMPParameters](iobluetooth/kbluetoothhcierrorinvalidlmpparameters.md)
- [kBluetoothHCIErrorKeyMissing](iobluetooth/kbluetoothhcierrorkeymissing.md)
- [kBluetoothHCIErrorLMPErrorTransactionCollision](iobluetooth/kbluetoothhcierrorlmperrortransactioncollision.md)
- [kBluetoothHCIErrorLMPPDUNotAllowed](iobluetooth/kbluetoothhcierrorlmppdunotallowed.md)
- [kBluetoothHCIErrorLMPResponseTimeout](iobluetooth/kbluetoothhcierrorlmpresponsetimeout.md)
- [kBluetoothHCIErrorMACConnectionFailed](iobluetooth/kbluetoothhcierrormacconnectionfailed.md)
- [kBluetoothHCIErrorMax](iobluetooth/kbluetoothhcierrormax.md)
- [kBluetoothHCIErrorMaxNumberOfConnections](iobluetooth/kbluetoothhcierrormaxnumberofconnections.md)
- [kBluetoothHCIErrorMaxNumberOfSCOConnectionsToADevice](iobluetooth/kbluetoothhcierrormaxnumberofscoconnectionstoadevice.md)
- [kBluetoothHCIErrorMemoryFull](iobluetooth/kbluetoothhcierrormemoryfull.md)
- [kBluetoothHCIErrorNoConnection](iobluetooth/kbluetoothhcierrornoconnection.md)
- [kBluetoothHCIErrorOtherEndTerminatedConnectionAboutToPowerOff](iobluetooth/kbluetoothhcierrorotherendterminatedconnectionabouttopoweroff.md)
- [kBluetoothHCIErrorOtherEndTerminatedConnectionLowResources](iobluetooth/kbluetoothhcierrorotherendterminatedconnectionlowresources.md)
- [kBluetoothHCIErrorOtherEndTerminatedConnectionUserEnded](iobluetooth/kbluetoothhcierrorotherendterminatedconnectionuserended.md)
- [kBluetoothHCIErrorPageTimeout](iobluetooth/kbluetoothhcierrorpagetimeout.md)
- [kBluetoothHCIErrorPairingNotAllowed](iobluetooth/kbluetoothhcierrorpairingnotallowed.md)
- [kBluetoothHCIErrorPairingWithUnitKeyNotSupported](iobluetooth/kbluetoothhcierrorpairingwithunitkeynotsupported.md)
- [kBluetoothHCIErrorParameterOutOfMandatoryRange](iobluetooth/kbluetoothhcierrorparameteroutofmandatoryrange.md)
- [kBluetoothHCIErrorQoSNotSupported](iobluetooth/kbluetoothhcierrorqosnotsupported.md)
- [kBluetoothHCIErrorQoSRejected](iobluetooth/kbluetoothhcierrorqosrejected.md)
- [kBluetoothHCIErrorQoSUnacceptableParameter](iobluetooth/kbluetoothhcierrorqosunacceptableparameter.md)
- [kBluetoothHCIErrorRepeatedAttempts](iobluetooth/kbluetoothhcierrorrepeatedattempts.md)
- [kBluetoothHCIErrorReservedSlotViolation](iobluetooth/kbluetoothhcierrorreservedslotviolation.md)
- [kBluetoothHCIErrorRoleChangeNotAllowed](iobluetooth/kbluetoothhcierrorrolechangenotallowed.md)
- [kBluetoothHCIErrorRoleSwitchFailed](iobluetooth/kbluetoothhcierrorroleswitchfailed.md)
- [kBluetoothHCIErrorRoleSwitchPending](iobluetooth/kbluetoothhcierrorroleswitchpending.md)
- [kBluetoothHCIErrorSCOAirModeRejected](iobluetooth/kbluetoothhcierrorscoairmoderejected.md)
- [kBluetoothHCIErrorSCOIntervalRejected](iobluetooth/kbluetoothhcierrorscointervalrejected.md)
- [kBluetoothHCIErrorSCOOffsetRejected](iobluetooth/kbluetoothhcierrorscooffsetrejected.md)
- [kBluetoothHCIErrorSecureSimplePairingNotSupportedByHost](iobluetooth/kbluetoothhcierrorsecuresimplepairingnotsupportedbyhost.md)
- [kBluetoothHCIErrorSuccess](iobluetooth/kbluetoothhcierrorsuccess.md)
- [kBluetoothHCIErrorUnacceptableConnectionInterval](iobluetooth/kbluetoothhcierrorunacceptableconnectioninterval.md)
- [kBluetoothHCIErrorUnitKeyUsed](iobluetooth/kbluetoothhcierrorunitkeyused.md)
- [kBluetoothHCIErrorUnknownHCICommand](iobluetooth/kbluetoothhcierrorunknownhcicommand.md)
- [kBluetoothHCIErrorUnknownLMPPDU](iobluetooth/kbluetoothhcierrorunknownlmppdu.md)
- [kBluetoothHCIErrorUnspecifiedError](iobluetooth/kbluetoothhcierrorunspecifiederror.md)
- [kBluetoothHCIErrorUnsupportedFeatureOrParameterValue](iobluetooth/kbluetoothhcierrorunsupportedfeatureorparametervalue.md)
- [kBluetoothHCIErrorUnsupportedLMPParameterValue](iobluetooth/kbluetoothhcierrorunsupportedlmpparametervalue.md)
- [kBluetoothHCIErrorUnsupportedRemoteFeature](iobluetooth/kbluetoothhcierrorunsupportedremotefeature.md)
- [kBluetoothHCIErrorCoarseClockAdjustmentRejected](iobluetooth/kbluetoothhcierrorcoarseclockadjustmentrejected.md)

## See Also

### Enumerations

- [BluetoothAMPCommandRejectReason](iobluetooth/bluetoothampcommandrejectreason.md)
- [BluetoothAMPCreatePhysicalLinkResponseStatus](iobluetooth/bluetoothampcreatephysicallinkresponsestatus.md)
- [BluetoothAMPDisconnectPhysicalLinkResponseStatus](iobluetooth/bluetoothampdisconnectphysicallinkresponsestatus.md)
- [BluetoothAMPDiscoverResponseControllerStatus](iobluetooth/bluetoothampdiscoverresponsecontrollerstatus.md)
- [BluetoothAMPGetAssocResponseStatus](iobluetooth/bluetoothampgetassocresponsestatus.md)
- [BluetoothAMPGetInfoResponseStatus](iobluetooth/bluetoothampgetinforesponsestatus.md)
- [BluetoothAMPManagerCode](iobluetooth/bluetoothampmanagercode.md)
- [BluetoothHCIPowerState](iobluetooth/bluetoothhcipowerstate.md)
- [BluetoothL2CAPCommandCode](iobluetooth/bluetoothl2capcommandcode.md)
- [BluetoothL2CAPCommandRejectReason](iobluetooth/bluetoothl2capcommandrejectreason.md)
- [BluetoothL2CAPConfigurationOption](iobluetooth/bluetoothl2capconfigurationoption.md)
- [BluetoothL2CAPConfigurationResult](iobluetooth/bluetoothl2capconfigurationresult.md)
- [BluetoothL2CAPConfigurationRetransmissionAndFlowControlFlags](iobluetooth/bluetoothl2capconfigurationretransmissionandflowcontrolflags.md)
- [BluetoothL2CAPConnectionResult](iobluetooth/bluetoothl2capconnectionresult.md)
- [BluetoothL2CAPConnectionStatus](iobluetooth/bluetoothl2capconnectionstatus.md)