How to enable users to pay each other in my app?

[AzSoft22]

Hi.

I am pretty new to Authorise.net and by what I can see from the docs it's a great platform.

I have a one question.

How to allow user to pay other user when he wants to buy his product online?

I guess each user should have a merchant account on Authorise.net?

If yes, what would be the easiest way to create that account? Any HTML form to copy to our website?

And when they create account, I guess we should store their info somewhere in our system, associate them with particular user and use it for later payments. How we specify payment destination?

I did not find a part of the doc that addresses this question, so any help is appreciated.

Thanks in advance

[AzSoft22]

Is there a simple button to show at our website, something like Connect payment account. The click to this should eventually open a popup window which would enable the user to register.

Then, is there a webhook when the account is registered, so we can have API login id and transaction key and store it to our database, for user's payments?

Thanks in advance,

[websopedia02]

On your Android phone, go to your payment methods in Google Play. Tap Add a payment method. Choose the payment method you want to add. Follow the on-screen instructions.

[sxcscooters]

I've stepped through the code multipel times. Returning null is difficult to debug. I'll reinstall Fiddler and see if I can get more, but as I said I used the code basically as is. I only changed it to take inputs from a form. 

As it's public code:

ApiOperationBase<ANetApiRequest, ANetApiResponse>.RunEnvironment = AuthorizeNet.Environment.SANDBOX;

ApiOperationBase<ANetApiRequest, ANetApiResponse>.MerchantAuthentication = new merchantAuthenticationType()
{
name = id,
ItemElementName = ItemChoiceType.transactionKey,
Item = key,
};

var creditCard = new creditCardType
{

cardNumber = cardNum,
expirationDate = expire,
cardCode = ccv
};

var billingAddress = new customerAddressType
{
firstName = firstName,
lastName = lastName,
address = address,
city = city,
zip = zip,
state = state
};

//standard api call to retrieve response
var paymentType = new paymentType { Item = creditCard };

// Add line Items
var lineItems = new lineItemType[1];
lineItems[0] = new lineItemType { itemId = "1", name = "Membership", quantity = 1, unitPrice = new Decimal(20.00) };

var transactionRequest = new transactionRequestType
{
transactionType = transactionTypeEnum.authCaptureTransaction.ToString(), // charge the card

amount = charge,
payment = paymentType,
billTo = billingAddress,
lineItems = lineItems
};

var request = new createTransactionRequest { transactionRequest = transactionRequest };

// instantiate the controller that will call the service
var controller = new createTransactionController(request);
controller.Execute();

// get the response from the service (errors contained if any)
var response = controller.GetApiResponse();

// validate response
if (response != null && response.messages.resultCode == messageTypeEnum.Ok)
{

returnModel.Code = response.transactionResponse.responseCode;
returnModel.Authorization = response.transactionResponse.authCode;
returnModel.AvsResponse = response.transactionResponse.avsResultCode;
returnModel.Reason = response.transactionResponse.messages[0].description;
returnModel.Transaction = response.transactionResponse.messages[0].code;
returnModel.TransactionId = response.transactionResponse.transId;

var user = await AddZineUserAsync(await UserManager.FindByNameAsync(User.Identity.Name));

}
else
{
returnModel = new CardModel
{
Reason = response != null ? response.transactionResponse.errors[0].errorCode : "-1",
Transaction = response != null ? response.transactionResponse.errors[0].errorText : "The error was not correctly returned. Please try again. Your card was not charged.",
};
}