<!--
{
  "documentType" : "article",
  "framework" : "PCIDriverKit",
  "identifier" : "/documentation/PCIDriverKit/correctable-error-bits-enum",
  "metadataVersion" : "0.1.0",
  "role" : "collectionGroup",
  "title" : "Correctable Error Bits"
}
-->

# Correctable Error Bits

Constants for the bits in the correctable error status register.

## Topics

### Constants

[`kIOPCICorrectableErrorBitReceiver`](/documentation/PCIDriverKit/kIOPCICorrectableErrorBitReceiver)

The bit number for a receiver error.

[`kIOPCICorrectableErrorBitBadTLP`](/documentation/PCIDriverKit/kIOPCICorrectableErrorBitBadTLP)

The bit number for a bad transaction layer packet error.

[`kIOPCICorrectableErrorBitBadDLLP`](/documentation/PCIDriverKit/kIOPCICorrectableErrorBitBadDLLP)

The bit number for a bad DTLP error.

[`kIOPCICorrectableErrorBitReplayNumRollover`](/documentation/PCIDriverKit/kIOPCICorrectableErrorBitReplayNumRollover)

The bit number for an error that requires the retransmission of a packet.

[`kIOPCICorrectableErrorBitReplayTimerTimeout`](/documentation/PCIDriverKit/kIOPCICorrectableErrorBitReplayTimerTimeout)

The bit number for a timeout error that involves the retransmission of a packet.

[`kIOPCICorrectableErrorBitAdvisoryNonFatal`](/documentation/PCIDriverKit/kIOPCICorrectableErrorBitAdvisoryNonFatal)

The bit number for an advisory error that is not fatal.

[`kIOPCICorrectableErrorBitCorrectedInternal`](/documentation/PCIDriverKit/kIOPCICorrectableErrorBitCorrectedInternal)

The bit number for an error that the device corrected internally.

[`kIOPCICorrectableErrorBitHeaderLogOverflow`](/documentation/PCIDriverKit/kIOPCICorrectableErrorBitHeaderLogOverflow)

The bit number for a header log overflow error.



---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)