Paypal error when processing credit card mvc 5 - asp.net-mvc-5

Question

I'm attempting to process creit cards through PayPal and keep getting this weird error:
{"name":"VALIDATION_ERROR","details":[{"field":"transactions[0].amount","issue":"Transaction
amount details (subtotal, tax, shipping) must add up to specified
amount total"}],"message":"Invalid request - see
details","information_link":"https://developer.paypal.com/webapps/developer/docs/api/#VALIDATION_ERROR","debug_id":"6e2cef39d556a"}
Here's the method I'm using:
public ActionResult PaymentWithCreditCard(PayWithCCViewModel model)
{
var cart = ShoppingCart.GetCart(this.HttpContext);
var cartItems = cart.GetCartItems();
List<Item> orderItems = new List<Item>();
foreach (var cartItem in cartItems)
{
var item = new Item();
item.name = cartItem.Product.ProductName;
item.currency = "USD";
item.price = cartItem.ProductPrice.ToString();
item.quantity = cartItem.ProductQuantity.ToString();
orderItems.Add(item);
}
ItemList itemList = new ItemList();
itemList.items = orderItems;
//Address for the payment
Address billingAddress = new Address();
billingAddress.city = model.BillingCity;
billingAddress.country_code = "US";
billingAddress.line1 = model.BillingAddressLine1;
billingAddress.line2 = model.BillingAddressLine2;
billingAddress.postal_code = model.BillingPostalCode;
billingAddress.state = model.BillingState;
//Now Create an object of credit card and add above details to it
CreditCard card = new CreditCard();
card.billing_address = billingAddress;
card.cvv2 = model.CVV2;
card.expire_month = model.ExpirationMonth;
card.expire_year = model.ExpirationYear;
card.first_name = model.FirstName;
card.last_name = model.LastName;
card.number = model.Number;
card.type = model.CardType.ToString();
var subTotal = cart.GetTotal();
var tax = Convert.ToDouble(subTotal) * Convert.ToDouble(.076);
var total = Convert.ToDouble(subTotal) + tax;
// Specify details of your payment amount.
Details details = new Details();
details.shipping = "3";
details.subtotal = subTotal.ToString();
details.tax = tax.ToString();
// Specify your total payment amount and assign the details object
Amount amount = new Amount();
amount.currency = "USD";
// Total = shipping tax + subtotal.
amount.total = total.ToString();
amount.details = details;
// Now make a trasaction object and assign the Amount object
Transaction transaction = new Transaction();
transaction.amount = amount;
transaction.description = "Payment to AccessorizeForLess.net";
transaction.item_list = itemList;
transaction.invoice_number = cart.GetCartId(this.HttpContext);
// Now, we have to make a list of trasaction and add the trasactions object
// to this list. You can create one or more object as per your requirements
List<Transaction> transactions = new List<Transaction>();
transactions.Add(transaction);
// Now we need to specify the FundingInstrument of the Payer
// for credit card payments, set the CreditCard which we made above
FundingInstrument fundInstrument = new FundingInstrument();
fundInstrument.credit_card = card;
// The Payment creation API requires a list of FundingIntrument
List<FundingInstrument> fundingInstrumentList = new List<FundingInstrument>();
fundingInstrumentList.Add(fundInstrument);
// Now create Payer object and assign the fundinginstrument list to the object
Payer payr = new Payer();
payr.funding_instruments = fundingInstrumentList;
payr.payment_method = "credit_card";
// finally create the payment object and assign the payer object & transaction list to it
Payment pymnt = new Payment();
pymnt.intent = "sale";
pymnt.payer = payr;
pymnt.transactions = transactions;
try
{
//getting context from the paypal, basically we are sending the clientID and clientSecret key in this function
//to the get the context from the paypal API to make the payment for which we have created the object above.
// Basically, apiContext has a accesstoken which is sent by the paypal to authenticate the payment to facilitator account. An access token could be an alphanumeric string
APIContext context = PayPalModel.GetAPIContext();
// Create is a Payment class function which actually sends the payment details to the paypal API for the payment. The function is passed with the ApiContext which we received above.
Payment payment = pymnt.Create(context);
//if the createdPayment.State is "approved" it means the payment was successfull else not
if (payment.state.ToLower() != "approved")
{
return View("FailureView");
}
}
catch (PayPalException ex)
{
Logger.Log("Error: " + ex.Message);
return View("FailureView");
}
return View("SuccessView");
}
I've stepped through the code and the total, tax and shipping seem to be correct, anyone have issues when dealing with PayPal before that could led me t a solution?

Answer 1

I forgot to add shipping to the total, now I get an approval