Comprehensive Apple Error Codes

Explore our extensive database of over 5,000 Apple Ecosystem error codes. From macOS to iOS, tvOS, watchOS, and visionOS, each code is presented with its name and a concise description to help you quickly pinpoint and resolve issues.

Whether you’re a developer refining an app or a user troubleshooting a system glitch, this resource empowers you with the knowledge to decode cryptic errors and find actionable solutions. No more guesswork—just clear guidance to keep your projects and devices running smoothly.

Number Name & Description Platforms Framework Header
4
CXErrorCodeRequestTransactionErrorUnknownCallUUID
CallKit transaction error: unknown call UUID.
iOS, macOS, visionOS, watchOS CallKit CXError.h
0
CXErrorCodeUnknownError
Unknown CallKit error.
iOS, macOS, visionOS, watchOS CallKit CXError.h
-2045
dataAlreadyClosed
Data already closed.
macOS CarbonCore MacErrors.h
-2044
dataAlreadyOpenForWrite
Data is already open for writing operations.
macOS CarbonCore MacErrors.h
-2047
dataNoDataRef
Data reference is missing or null
macOS CarbonCore MacErrors.h
-2042
dataNotOpenForRead
Data is not open for reading.
macOS CarbonCore MacErrors.h
-2043
dataNotOpenForWrite
Data or resource not opened for writing.
macOS CarbonCore MacErrors.h
-68
dataVerErr
Data version is invalid or unsupported.
macOS CarbonCore MacErrors.h
-30
dceExtErr
DCE extension error.
macOS CarbonCore MacErrors.h
-7117
dcmBadDataSizeErr
Bad data size in CarbonCore.
macOS CarbonCore MacErrors.h
-7102
dcmBadDictionaryErr
DCM bad dictionary error.
macOS CarbonCore MacErrors.h
-7124
dcmBadFeatureErr
Bad feature error in DCM.
macOS CarbonCore MacErrors.h
-7111
dcmBadFieldInfoErr
Bad field info error in CarbonCore.
macOS CarbonCore MacErrors.h
-7112
dcmBadFieldTypeErr
DCM: bad field type error.
macOS CarbonCore MacErrors.h
-7118
dcmBadFindMethodErr
Bad find method in DCM operation
macOS CarbonCore MacErrors.h
-7115
dcmBadKeyErr
Data compression manager encountered a bad key
macOS CarbonCore MacErrors.h
-7119
dcmBadPropertyErr
Invalid data compression manager property.
macOS CarbonCore MacErrors.h
-7107
dcmBlockFullErr
Data compression manager block is full
macOS CarbonCore MacErrors.h
-7127
dcmBufferOverflowErr
Buffer overflow error in DCM.
macOS CarbonCore MacErrors.h
-7105
dcmDictionaryBusyErr
Dictionary manager busy.
macOS CarbonCore MacErrors.h
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