Hi Apple Support, I am encountering an issue while testing in-app purchases in the sandbox environment. I have created a sandbox tester account Logged out of the App Store and System Settings on my Mac. My main developer account is signed in under Sign In & Capabilities in Xcode. The Bundle ID matches the one configured in App Store Connect. The Product ID I am querying also matches the configuration. Deleting the app and reinstalling. Restarting my Mac. When running my code in debug mode, I observe the following: Running debug build App Store environment: Production [1b294b55] Error updating Storefront: Error Domain=StoreKit_Shared.StoreKitInternalError Code=7 "(null)" Valid products: [] Invalid product IDs: ["com.x.x.x.monthly"] No products found The Product ID (com.x.x.x.monthly) matches the one I have configured in App Store Connect. The bundle id matches. When I create a StoreKit Configuration file in Xcode and sync it with my app, I can see the product IDs correctly. Below are the relevant code snippets for fetching and handling products: func fetchProducts() { guard !productIDs.isEmpty else { print("No product IDs configured") return } let request = SKProductsRequest(productIdentifiers: productIDs) request.delegate = self print("Starting product request...") request.start() } func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse) { DispatchQueue.main.async { print("Valid products: \(response.products)") print("Invalid product IDs: \(response.invalidProductIdentifiers)") self.products = response.products if self.products.isEmpty { print("No products found") } else { print("products not empty") for product in self.products { print("Fetched product: \(product.localizedTitle) - \(product.priceLocale.currencySymbol ?? "")\(product.price)") } } } } func debugStoreSetup() { if let receiptURL = Bundle.main.appStoreReceiptURL { if receiptURL.lastPathComponent == "sandboxReceipt" { print("App Store environment: Sandbox") } else { print("App Store environment: Production") } } else { print("No receipt found") } } Could you help identify why my app is not recognizing the Product ID in the sandbox environment? Thank you for your assistance.