They deleted my linked post because I guess they didn't like the sample code and explanation I provided.
The short answer is that:
1) Yes, you have to use: dataDescriptor = "COMMON.APPLE.INAPP.PAYMENT"
2) You need to take the entire Apple Pay JSON token, base64 encode it, and assign that to the dataValue property.
Hope this helps!
For me, in C#, it looked like this:
//base-64 encode the json
var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(tokenjson);
var token64 = System.Convert.ToBase64String(plainTextBytes);
ApiOperationBase<ANetApiRequest, ANetApiResponse>.RunEnvironment = AuthorizeNet.Environment.SANDBOX;
// define the merchant information (authentication / transaction id)
ApiOperationBase<ANetApiRequest, ANetApiResponse>.MerchantAuthentication = new merchantAuthenticationType()
{
name = ApiLoginID,
ItemElementName = ItemChoiceType.transactionKey,
Item = ApiTransactionKey,
};
//set up data based on transaction
var opaqueData = new opaqueDataType { dataDescriptor = "COMMON.APPLE.INAPP.PAYMENT", dataValue = token64 };
//standard api call to retrieve response
var paymentType = new paymentType { Item = opaqueData };
var transactionRequest = new transactionRequestType
{
transactionType = transactionTypeEnum.authCaptureTransaction.ToString(), // authorize and capture transaction
amount = Amount,
payment = paymentType
};
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();
