Apple Error Codes Database
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 |
|---|---|---|---|---|
| -251 |
midiNoPortErr
No MIDI port is open or available.
|
macOS | CarbonCore | MacErrors.h |
| -253 |
midiTooManyConsErr
Too many MIDI connections.
|
macOS | CarbonCore | MacErrors.h |
| -252 |
midiTooManyPortsErr
MIDI has too many ports connected.
|
macOS | CarbonCore | MacErrors.h |
| -254 |
midiVConnectErr
Failed to connect MIDI virtual device.
|
macOS | CarbonCore | MacErrors.h |
| -255 |
midiVConnectMade
MIDI virtual connection made.
|
macOS | CarbonCore | MacErrors.h |
| -256 |
midiVConnectRmvd
MIDI virtual connection removed.
|
macOS | CarbonCore | MacErrors.h |
| -258 |
midiWriteErr
Error writing MIDI data.
|
macOS | CarbonCore | MacErrors.h |
| -2063 |
missingRequiredParameterErr
A required parameter is missing.
|
macOS | CarbonCore | MacErrors.h |
| 5 |
MKErrorDirectionsNotFound
Directions could not be found for the map request.
|
iOS, macOS | MapKit | MKTypes.h |
| 3 |
MKErrorLoadingThrottled
Loading request throttled by MapKit, possibly due to excessive requests.
|
iOS, macOS | MapKit | MKTypes.h |
| 4 |
MKErrorPlacemarkNotFound
MapKit placemark not found.
|
iOS, macOS | MapKit | MKTypes.h |
| 2 |
MKErrorServerFailure
Server failure in MapKit.
|
iOS, macOS | MapKit | MKTypes.h |
| 1 |
MKErrorUnknown
Unknown error in MapKit.
|
iOS, macOS, tvOS, visionOS, watchOS | MapKit | MKTypes.h |
| 0 |
MLCLossTypeMeanAbsoluteError
Mean Absolute Error loss type in MLCompute.
|
iOS, macOS, tvOS | MLCompute | MLCTypes.h |
| 1 |
MLCLossTypeMeanSquaredError
Mean squared error loss function.
|
iOS, macOS, tvOS | MLCompute | MLCTypes.h |
| 1 |
MLModelErrorFeatureType
CoreML model feature type error
|
iOS, macOS, tvOS, visionOS, watchOS | CoreML | MLModelError.h |
| 0 |
MLModelErrorGeneric
Generic machine learning model error.
|
iOS, macOS, tvOS, visionOS, watchOS | CoreML | MLModelError.h |
| 3 |
MLModelErrorIO
I/O error occurred in the CoreML model.
|
iOS, macOS, tvOS, visionOS, watchOS | CoreML | MLModelError.h |
| -2526 |
mmInternalError
Internal memory manager error.
|
macOS | CarbonCore | MacErrors.h |
| -2062 |
movieTextNotFoundErr
Required movie text resource not found.
|
macOS | CarbonCore | MacErrors.h |