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Apple New Added 9 October 2026

App Store Connect: ITMS-91053: Missing API declaration

Since May 2024 Apple rejects uploads that call certain "required reason" APIs, such as UserDefaults, file timestamps or system boot time, without a privacy manifest saying why. The call is often in a third-party SDK rather than your code, so updating the dependency to a version that ships its own PrivacyInfo.xcprivacy can be the whole fix. The rejection email names the API category, which tells you which reason to declare.

Quick fix

Read the commands before running them. Anything that restarts a service, deletes data or changes permissions should be tried on a non-production system first.

Quick fix
# Which bundles already include a privacy manifest?
find ~/Library/Developer/Xcode/Archives -name PrivacyInfo.xcprivacy | tail
# Xcode: Organizer > right-click the archive > Generate Privacy Report

# Update SDKs first: most popular ones now ship their own manifest
pod outdated
# SwiftPM: File > Packages > Update to Latest Package Versions

# Then add File > New > File > App Privacy to the app target.
# Example for UserDefaults read by the app itself:
#   NSPrivacyAccessedAPITypes
#     NSPrivacyAccessedAPIType        NSPrivacyAccessedAPICategoryUserDefaults
#     NSPrivacyAccessedAPITypeReasons CA92.1

How to diagnose Apple errors

macOS developer errors concentrate around three subsystems: the command line tools (xcrun and the active developer directory), the dynamic linker (dyld, library paths, and code signing), and Gatekeeper / notarisation. Apple Silicon added a fourth axis: architecture mismatches between arm64 and x86_64 binaries, which usually surface as confusing "library not loaded" or "bad CPU type" messages rather than as an explicit architecture error.

If the quick fix above does not resolve it, work through these steps. They apply to this whole class of error, not just to this one message, which is usually what saves the time.

  1. Check the active developer directory first with xcode-select -p. After every macOS or Xcode update this can point at a path that no longer exists, breaking git, compilers and package managers all at once.
  2. For dyld errors, run otool -L /path/to/binary to list what it actually wants, then verify each path exists. DYLD_PRINT_LIBRARIES=1 shows the resolution order at runtime.
  3. Confirm architecture with file /path/to/binary and uname -m. On Apple Silicon, a Rosetta shell reports x86_64 and will silently install the wrong Homebrew prefix.
  4. Homebrew lives at /opt/homebrew on Apple Silicon and /usr/local on Intel. Permission errors under /usr/local on an M-series Mac almost always mean a Rosetta/native mix-up.
  5. For Gatekeeper and notarisation, use spctl -a -vvv to assess a bundle and xcrun notarytool log to get the actual rejection reason. The submission status alone tells you nothing useful.

Tools worth reaching for

  • xcode-select -p
  • otool -L
  • codesign -dv --verbose=4
  • spctl -a -vvv
  • xcrun notarytool log

Authoritative references

Primary documentation for this error, worth reading before applying any fix in production.

developer.apple.com developer.apple.com

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