"An unknown error occured" on requestSubscription()

[gkasdorf]

I've been fiddling with this for a few hours now and seem to be following the example correctly, but have not been able to get any success.

1. I've wrapped my app with withIAPContext()
2. I get my products and set the onPress event for my purchase buttons to call requestSubscription() with the SKU.
3. Pressing the button gives me the iOS popup for the sandbox transaction.
4. The popup closes and I receive An unknown error occurred error code 0.

This is my setup:

    const {
        connected,
        subscriptions,
        getSubscriptions,
        currentPurchase,
        finishTransaction,
    } = useIAP();

    useFocusEffect(useCallback(() => {
        loadIap().then();
    }, []));

    const loadIap = async () => {
        await getSubscriptions({skus: ["com.gkasdorf.tuneswap.plus", "com.gkasdorf.tuneswap.turbo"]});
        console.log(subscriptions);
    };

    useEffect(() => {
        const checkCurrentPurchase = async () => {
            try {
                if (currentPurchase?.productId) {
                    finishTransaction({
                        purchase: currentPurchase,
                        isConsumable: true,
                    }).then((res) => console.log(res));
                }
            } catch (error) {
                if (error instanceof PurchaseError) {
                    console.log(error.message);
                } else {
                    console.log(error.message);
                }
            }
        };

        checkCurrentPurchase();
    }, [currentPurchase, finishTransaction]);

////////

    const onSubscribePress = async (subscription): Promise<void> => {
        setLoading(true);

        try {
            await requestSubscription({sku: subscription.productId});
            setLoading(false);
        } catch(e) {
            setLoading(false);
            console.log(e.message);
        }
    };

I am using Expo, if that is of consequence and for that matter using the dev client for testing. Is that an issue? Obviously it is connecting and getting the subscriptions correctly since I am able to load the popup for the purchase.

[gkasdorf]

Ah, good ol' Apple and their ambiguous error messages. Can't believe that I simply did not have all metadata set (must have been an error when I saved it on their end?) Disregard this!