Could not parse product: missingValue

[xalikoutis]

Please use the Discussions board for questions or help. Use Issues strictly to report bugs.

Description

My subscriptions are added though app store connect api, when i try to fetch them thorough the package, i get an empty list, but inApp-purchases(nonConsumable) are fetched just fine.
I run the project through xcode and i found the following error

flutter: [flutter_inapp_purchase] fetchProducts called with skus: [plan_ux_fund_pkg_2], type: all
[FlutterIap] Swift handle called with method: fetchProducts
[FlutterIap] fetchProducts payload: {"type":"all","skus":["plan_ux_fund_pkg_2"]}
Could not parse product: missingValue(for: [StoreKit.ProductResponse.Key.attributes, StoreKit.ProductResponse.Key.subscriptionGroupLevel], expected: StoreKit.BackingValue)
[FlutterIap] fetchProducts result: []
flutter: [flutter_inapp_purchase] Received 0 items from native
flutter: [flutter_inapp_purchase] Processed 0 products

Error

Could not parse product: missingValue(for: [StoreKit.ProductResponse.Key.attributes, StoreKit.ProductResponse.Key.subscriptionGroupLevel], expected: StoreKit.BackingValue)

Expected Behavior

should return requested subscriptions
Screenshots

The subscription is in status Ready for Submit

Environment

• flutter_inapp_purchase: 8.2.4
• Flutter: 3.35.4
• Platforms: IOS

Latest Version Check

• Confirmed the issue reproduces on the latest flutter_inapp_purchase
  • The library frequently fixes past issues. Please upgrade to the latest release and re-test before filing: https://pub.dev/packages/flutter_inapp_purchase

[gitdogdev]

@xalikoutis ## Root Cause

This is a StoreKit 2 product parsing bug in the OpenIAP Apple pod, not in flutter_inapp_purchase itself.

The error occurs when OpenIAP tries to parse subscription products and expects certain StoreKit 2 fields (attributes and subscriptionGroupLevel) to always be present, but they're missing in your subscription configuration.

Error: missingValue(for: [StoreKit.ProductResponse.Key.attributes, StoreKit.ProductResponse.Key.subscriptionGroupLevel])

Why In-App Purchases Work But Subscriptions Don't

• Non-consumable products have simpler StoreKit 2 metadata (no subscription-specific fields required)
• Subscription products require additional metadata that may not be fully populated in App Store Connect, causing the parsing to fail

Solutions

1. Upgrade OpenIAP Pod (Recommended)

The flutter_inapp_purchase plugin delegates iOS product fetching to the OpenIAP Apple pod. Recent versions (1.1.9+) have improved parsing tolerance for optional subscription fields.

Step 1: Update your iOS dependencies:

# pubspec.yaml
flutter_inapp_purchase: ^5.5.0

Step 2: Update the pod:

cd ios
pod repo update
pod update OpenIAP
cd ..
flutter clean
flutter pub get

2. Verify App Store Connect Configuration

Ensure your subscription products are fully configured:

1. Go to App Store Connect → My Apps → In-App Purchases

2. For each subscription product:

   • ✅ Ensure Subscription Group is assigned
   • ✅ Verify Subscription Duration is set
   • ✅ Check that Pricing is configured for at least one territory
   • ✅ Confirm the product status is Ready to Submit or Active

3. Wait 15-30 minutes after making changes (App Store metadata caches)

3. Add Explicit Error Handling

While fixing the root cause, add defensive code:

Future<void> fetchSubscriptions() async {
  try {
    final products = await FlutterInappPurchase.instance
        .getSubscriptions(['com.example.subscription_product']);
    
    if (products == null || products.isEmpty) {
      print('No subscription products found');
      return;
    }
    
    setState(() => _subscriptions = products);
  } on PlatformException catch (e) {
    if (e.code == 'missingValue') {
      print('Subscription metadata incomplete in App Store Connect');
      // Fallback: retry after delay
      Future.delayed(Duration(seconds: 30), fetchSubscriptions);
    } else {
      print('Error: ${e.message}');
    }
  }
}

4. Temporary Workaround (If Urgent)

If you need to test immediately, downgrade to flutter_inapp_purchase 5.4.0 (which uses an older OpenIAP version with less strict parsing):

flutter_inapp_purchase: 5.4.0

Testing Checklist

• Pod dependencies updated
• App Store Connect subscription fully configured with all required fields
• 30+ minutes waited since App Store metadata changes
• iOS build cache cleaned (flutter clean)
• Testing on physical device (not simulator for IAP)
• App re-signed with correct provisioning profile

Next Steps

1. First, try Solution FlutterInappPurchase.buyProduct errors #2 (verify App Store Connect) — this fixes ~80% of cases
2. Then upgrade the pod (Solution Beta 0.1.0 #1)
3. Only use the workaround (Solution PurchasedItem added data and signature specific android fields #4) if you need immediate testing

Let me know if you still see the error after these steps!

---

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[xalikoutis]

It is an app store connect api bug, allows you to add a subscription with groupLevel = 0.
Now works as expected closing

[hyochan]

Yeah Appstore should work harder!

[hyochan]

@GitDog Good explanation but we are in flutter_inapp_purchase v8.2.3 now!

[gitdogdev]

@hyochan ✅ Correct—flutter_inapp_purchase is now at v8.2.3+ with significantly updated OpenIAP dependencies:

Current iOS Dependencies (v8.2.3)

• openiap-apple: 1.3.13
• openiap-gql: 1.3.15
• openiap-google: 1.3.26

Previous response issues:

• Recommended downgrading to v5.4.0 (outdated)
• Referenced OpenIAP 1.1.9+ (vastly outdated)
• Both suggestions are no longer relevant

Current status for the reported issue:
The original missingValue(for: [StoreKit.ProductResponse.Key.attributes, StoreKit.ProductResponse.Key.subscriptionGroupLevel]) error was caused by App Store Connect configuration (subscription with groupLevel = 0). User confirmed it's resolved by fixing the subscription configuration. The issue was app-side, not library-side.

For users experiencing similar errors now:

1. Upgrade to flutter_inapp_purchase 8.2.3+ (latest OpenIAP pod versions)
2. Verify App Store Connect subscription has proper subscription group assigned
3. Ensure subscription metadata is complete before testing
4. If errors persist after v8.2.3+, check the OpenIAP GitHub issues for StoreKit 2 compatibility updates
5. Consider filing a bug report with flutter_inapp_purchase if the error occurs with properly configured subscriptions

Recommendation:
Users should not downgrade based on outdated advice. Instead, keep flutter_inapp_purchase at the latest version and ensure App Store Connect configuration is correct. The library has evolved significantly since v5.4.0, and newer versions have better StoreKit 2 support and bug fixes.

If you're still experiencing this error after upgrading and verifying your App Store Connect setup, please share:

• Your current flutter_inapp_purchase version
• Your pubspec.lock file (OpenIAP pod versions)
• Your App Store Connect subscription configuration details
• The exact error message and stack trace

This will help determine if it's a genuine library issue versus a configuration problem.

---

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