Error 'Couldn’t Find Package' When Using Purchases.purchaseDiscountedPackage in React Native

I'm currently Promotional Offer using RevenueCat into my React Native app and encountering an issue with purchasing discounted packages. Specifically, I'm using the Purchases.purchaseDiscountedPackage(selectedPackage, paymentDiscount) method. During unit testing on a physical device, I'm consistently getting an error stating "couldn’t find package."

Has anyone experienced a similar issue or have insights on how to resolve this? What steps can I take to ensure that the selectedPackage and paymentDiscount are correctly identified and processed during unit testing on a physical device locally?

Additional Details:

• The selectedPackage and paymentDiscount are being correctly fetched and displayed in the app.
• Regular purchases without discounts work as expected.
• The issue only arises when trying to purchase a discounted package.
• Testing is being conducted on a physical device locally.

Code Snippet:

if(selectedPackage.product.discounts.length > 0) {
        const paymentDiscount = await Purchases.getPromotionalOffer(selectedPackage.product, selectedPackage.product.discounts[0]);
        console.log(paymentDiscount);
        if(paymentDiscount) {
          const purchaseMade = await Purchases.purchaseDiscountedPackage(selectedPackage, paymentDiscount);
          // console.log('-- purchase made ----', purchaseMade);
        }
      }
      else {
        const { customerInfo } = await Purchases.purchasePackage(selectedPackage);
        // console.log('-- purchase info ---',customerInfo);
      }