> ## Documentation Index > Fetch the complete documentation index at: https://documentation.qonversion.io/llms.txt > Use this file to discover all available pages before exploring further. # Qonversion SDK Errors Details > Here you can find the descriptions of errors that may be returned from the Qonversion SDK. These descriptions are intended to help you troubleshoot any issues quicker. Make sure to use a device (not a simulator) when testing iOS purchases. | iOS enum (Int value) | Android enum | Description | | ----------------------------------------------------- | --------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `QONErrorCodeUnknown` (0) | `Unknown` | An unexpected error occurred that can't be classified | | `QONErrorCodePurchaseCanceled` (1) | `PurchaseCanceled` | The user canceled the purchase request | | `QONErrorCodeProductNotFound` (2) | `ProductNotFound` | This error means that, for some reason, the product is not found. There are a few reasons you can receive this error. See the details for the Product not found error [here](troubleshooting#product-not-found-error) | | `QONErrorCodeClientInvalid` (3) | | The client is not allowed to issue the request. | | `QONErrorCodePaymentInvalid` (4) | | The purchase identifier was invalid. | | `QONErrorCodePaymentNotAllowed` (5) | | This device is not allowed to make the payment. | | `QONErrorCodeStoreProductNotAvailable` (7) | `StoreProductNotAvailable` | The product is not available in the current storefront. | | `QONErrorCodeCloudServicePermissionDenied` (8) | | Apple StoreKit SKErrorCloudServicePermissionDenied error analog.Available from iOS 9.3, TV OS 9.3, Watch OS 6.2, Mac OS 11.0The user has not allowed access to Cloud service information. | | `QONErrorCodeCloudServiceNetworkConnectionFailed` (9) | | Apple StoreKit SKErrorCloudServiceNetworkConnection- Failed error analog.Available from iOS 9.3, TV OS 9.3, Watch OS 6.2, Mac OS 11.0The device could not connect to the network. | | `QONErrorCodeCloudServiceRevoked` (10) | | Apple StoreKit SKErrorCloudServiceRevoked error analog.Available from iOS 10.3, TV OS 10.3, Watch OS 6.2, Mac OS 11.0The user has revoked permission to use this cloud service. | | `QONErrorCodePrivacyAcknowledgementRequired` (11) | | Apple StoreKit SKErrorPrivacyAcknowledgementRequired error analog.Available from iOS 12.2, TV OS 12.2, Watch OS 6.2, Mac OS 10.14.4The user needs to acknowledge Apple's privacy. | | `QONErrorCodeUnauthorizedRequestData` (12) | | Apple StoreKit SKErrorUnauthorizedRequestData error analog.Available from iOS 12.2, Watch OS 6.2, Mac OS 10.14.4The app is attempting to use SKPayment's requestData property but does not have the appropriate entitlement. | | | `BillingUnavailable` | The Billing service is unavailable on the device. Please see the details [here](troubleshooting#billing-unavailable-error). | | | `PurchaseInvalid` | Failure to purchase. Please ensure that you are using the Google account where purchases are allowed, and the application was correctly signed and properly set up for billing. Please have a look at the following [guide on setting up the Google Play Store Billing](google-play). | | | `ProductNotOwned` | Failure to consume the purchase since the item is not owned. | | | `ProductAlreadyOwned` | Failure to purchase since the item is already owned. | | | `LaunchError` | There was an error while launching the Qonversion SDK. | | | `PurchaseUnspecified` | Unspecified state of the purchase. | | `QONErrorCodeNetworkConnectionFailed` (14) | `NetworkConnectionFailed` | Failed to connect to the network. | | `QONErrorCodeInternalError` (17) | | An internal SDK error occurred (iOS-only). | | `QONErrorCodeIncorrectRequest` (22) | | The SDK request failed (iOS-only). | | `QONErrorCodeBackendError` (23) | `BackendError` | There was an internal backend error. | | `QONErrorCodePurchasePending` (18) | | The payment transaction is in the queue, but its final status is pending external action. | | `QONErrorCodeRemoteConfigurationNotAvailable` (19) | `RemoteConfigurationNotAvailable` | Remote configuration is not available for the current user. Please ensure that the remote configuration is configured correctly in the Qonversion Dashboard. | | `QONErrorCodeFailedToReceiveData` (20) | `ResponseParsingFailed` | Something went wrong during the network data deserialization | | `QONErrorCodeResponseParsingFailed` (21) | `ResponseParsingFailed` | The response has the wrong format. | | `QONErrorCodeInvalidCredentials` (25) | `InvalidCredentials` | The access token is invalid or not set | | `QONErrorCodeInvalidClientUID` (26) | `InvalidClientUid` | Client Uid is invalid or not set | | `QONErrorCodeUnknownClientPlatform` (27) | `UnknownClientPlatform` | The current platform is not supported | | `QONErrorCodeFraudPurchase` (28) | `FraudPurchase` | Fraud purchase was detected | | `QONErrorCodeFeatureNotSupported` (29) | `FeatureNotSupported` | The requested feature is not supported | | `QONErrorCodeAppleStoreError` (30) | `PlayStoreError` | There was an issue with the Play Store service (Android) or App Store service (iOS). The store is unavailable, times out, disconnects, or returns an unexpected response. | | `QONErrorCodePurchaseInvalid` (31) | `PurchaseInvalid` | Failure of purchase. For example, a purchase with such `purchaseToken` can't be found. Possible reason: the provided store key exists, but is related to another project. | | `QONErrorCodeProjectConfigError` (32) | `ProjectConfigError` | The project is not configured or configured incorrectly in Qonversion's settings dashboard. Check the details [here](troubleshooting#project-config-error-active-store-not-found) | | `QONErrorCodeInvalidStoreCredentials` (33) | `InvalidStoreCredentials` | This account does not have access to the requested application. Please check the provided Store keys.Check the details [here](troubleshooting#invalid-store-credentials-error) | | `QONErrorCodeReceiptValidationError` (34) | | The provided receipt can't be validated. Check the details [here](troubleshooting#receipt-validation-error) | | `QONErrorCodeApiRateLimitExceeded` (35) | `ApiRateLimitExceeded` | There were too many parallel or subsequent requests to the Qonversion API in a while. | | `QONErrorCodeOfferingsNotAvailable` (36) | `OfferingsNotFound` | No offerings found for the current user | *** [Troubleshooting](troubleshooting) [Rate Limits](rate-limits)