How get error message when I enter wrong Expiration date or cvv?

[steve2301]

I am using the Accept.js, where the iframe window pops up in 

my web page. I am on Production. I enter a wrong Expiration date

for the credit card.

How can I get a message like below is from Authorize.net ? I am using C#.

{
		"code" : "316",
		"text" : "Credit card expiration date is invalid.",
		"integration_suggestions" : "", 
		"other_suggestions" : "This is a processor-issued decline."
	},

TIA

Steve2301