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Troubleshooting Guide

This guide covers common issues you might encounter when integrating the MetaMap iOS SDK and their solutions.

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Installation Issues

Problem: pod install fails or shows dependency conflicts.Solutions:
  • Update CocoaPods to the latest version: 
    sudo gem install cocoapods
  • Clear CocoaPods cache: 
    pod cache clean --all
pod deintegrate
pod install
  • Ensure your Podfile specifies the correct iOS version: 
    platform :ios, '13.0'
  • Try updating your pod repository: 
    pod repo update
Problem: SDK download is taking too long or consuming too much space.Solution:
  • As of version 3.22.5, the SDK size has been reduced from 50MB to 30MB
  • As of version 3.13.2, download size was optimized to 3.66MB
  • Ensure you’re using the latest version: 
    pod 'MetaMapSDK', '3.22.8'
Problem: Xcode shows build errors after adding MetaMapSDK.Solutions:
  • Clean build folder (Shift + Cmd + K)
  • Delete derived data: 
    rm -rf ~/Library/Developer/Xcode/DerivedData
  • Ensure Swift version 5.7 is configured in your project
  • Check minimum iOS deployment target is set to iOS 13.0 or higher

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Runtime Issues

Problem: Application crashes immediately when calling showMetaMapFlow.Solutions:
  • Verify you’ve added all required permissions to Info.plist: 
    <key>NSCameraUsageDescription</key>
<string>MetaMap needs access to your Camera</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>MetaMap needs access to your media library</string>
<key>NSMicrophoneUsageDescription</key>
<string>MetaMap needs access to your Microphone</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>MetaMap will use your location information to provide best possible verification experience.</string>
  • Check that clientId and flowId are valid
  • Ensure MetaMapButtonResult.shared.delegate is set before calling showMetaMapFlow
  • Check console logs for specific error messages
Problem: verificationSuccess or verificationCancelled callbacks are not triggered.Solutions:
  • Ensure you set the delegate before showing the flow: 
    MetaMapButtonResult.shared.delegate = self
  • Verify your class conforms to MetaMapButtonResultDelegate: 
    extension ViewController: MetaMapButtonResultDelegate {
    func verificationSuccess(identityId: String?, verificationID: String?) {
        print("Success: \(identityId ?? "")")
    }
    
    func verificationCancelled() {
        print("Cancelled")
    }
}
  • For SwiftUI, ensure MetaMapDelegateObserver is properly initialized
Problem: Camera or microphone features fail during verification.Solutions:
  • Verify all required permissions are in Info.plist
  • Check device settings to ensure permissions are granted
  • Test on a physical device (simulator has limited camera support)
  • Ensure you’re not blocking camera access in your app’s settings
  • Check for conflicts with other SDKs that use camera/microphone
Problem: Multiple verifications are being created for a single flow.Solution:
  • This was fixed in version 3.15.2
  • Update to the latest SDK version: 
    pod 'MetaMapSDK', '3.22.8'
  • Ensure you’re not calling showMetaMapFlow multiple times accidentally

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UI and Display Issues

Problem: Layout issues or crashes specific to iPad.Solutions:
  • Update to version 3.22.3 or later (fixed active liveness orientation capture)
  • Version 3.9.0 fixed crashes on iPad
  • Ensure your app supports both iPhone and iPad if needed
  • Test on actual iPad devices for orientation-specific issues
Problem: Button colors or text colors not changing despite metadata settings.Solutions:
  • Use proper hex color format in metadata: 
    metadata: ["buttonColor": "#FF5733", "buttonTextColor": "#FFFFFF"]
  • Version 3.16.1+ supports full color customization
  • Check if you’re using the correct metadata keys:
    • buttonColor for button background
    • buttonTextColor for button text
Problem: Custom fonts specified in metadata are not being used.Solutions:
  • Ensure font files are added to your Xcode project
  • Add fonts to Info.plist under “Fonts provided by application”
  • Use correct font file names with extensions: 
    metadata: ["regularFont": "YourFont-Regular.ttf", "boldFont": "YourFont-Bold.ttf"]
  • Verify font files are included in the app target
Problem: UI doesn’t adapt properly to dark mode.Solution:
  • Dark mode support was added in version 3.10.1
  • Update to version 3.22.8 for full dark mode support
  • Test with device set to both light and dark appearance

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Document Verification Issues

Problem: Upload issues specifically with Brazilian driver’s licenses.Solution:
  • This was fixed in version 3.22.5
  • Update to the latest SDK version
  • Ensure proper document type is selected in your flow configuration
Problem: Country restrictions preventing valid document uploads.Solutions:
  • Version 3.18.2 fixed default country selection in restrictions
  • Version 3.11.2 fixed country restriction limiting uploads
  • Verify your flow configuration allows the document’s country
  • Check that country restrictions are properly configured in MetaMap dashboard
Problem: Cannot upload PDFs with multiple pages.Solution:
  • Multi-page PDF support was added in version 3.20.1
  • Update to version 3.22.8 for this feature
  • Ensure the PDF file size is within acceptable limits

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Network and Connectivity Issues

Problem: Real-time connection failures or ping-pong errors.Solutions:
  • Version 3.11.3 fixed socket connection ping-pong issues
  • Version 3.13.0 updated to Socket.io version .three
  • Check network connectivity
  • Verify firewall settings allow WebSocket connections
  • Test on different networks (WiFi vs cellular)
Problem: Users blocked by IP restrictions.Solutions:
  • Version 3.13.0 shows IP restriction before start screen
  • Version 3.12.0 fixed IP restriction issues
  • Verify IP whitelist in MetaMap dashboard
  • Provide clear error messaging to users
  • Consider VPN usage affecting IP detection
Problem: Poor handling of network disconnections.Solution:
  • Version 3.8.9 added support for internet disconnect cases
  • Version 3.9.5 improved server error and no internet screens
  • Ensure users have stable internet connection
  • Test app behavior in airplane mode

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Integration-Specific Issues

Problem: SDK’s Sentry installation conflicts with your own.Solutions:
  • Version 3.15.2 fixed conflicts between SDK and merchant Sentry
  • Version 3.18.1 updated to Sentry 8.18.0 and fixed vulnerabilities
  • Use latest SDK version for best compatibility
  • Configure Sentry namespacing if needed
Problem: Metadata values not being recognized or applied.Solutions:
  • Ensure correct parameter names and format: 
    metadata: [
    "fixedLanguage": "es",
    "buttonColor": "#FF5733",
    "buttonTextColor": "#FFFFFF",
    "identityId": "existing-identity-id",
    "encryptionConfigurationId": "config-id"
]
  • Supported languages: “en”, “es”, “fr”, “pt”, “ru”, “tr”, “de”, “it”, “pl”, “th”
  • Version 3.9.8 replaced metadata dictionary with object
Problem: Cannot re-verify an existing identity.Solutions:
  • Pass identityId in metadata: 
    metadata: ["identityId": "your-identity-id"]
  • Version 3.14.0 added re-usage feature
  • Version 3.15.0 added Idemia re-usage support
  • Ensure the identity exists and is in a re-verifiable state
Problem: Cannot resume verification after app interruption.Solution:
  • Version 3.22.4 added support for resuming after interruption
  • Update to version 3.22.8
  • Ensure proper state management in your app
  • Test with phone calls and app backgrounding scenarios

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Getting Additional Help

If you’re still experiencing issues after trying these solutions:
  1. Check the GitHub issues page for similar problems
  2. Review the changelog for recent fixes
  3. Ensure you’re using the latest SDK version (3.22.8)
  4. Contact MetaMap support with:
    • SDK version
    • iOS version
    • Device model
    • Complete error logs
    • Steps to reproduce the issue