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Here's a support case I took up with Authorize.Net, and it left me frustrated and confused about how to best get support when issues crop up, especially if they involve the API.-------------------------------------------------------------------------...

I am having a problem with the Authorize.Net API. When my web application goes to request a new access access token at https://access.authorize.net/oauth/v1/token, posting in grant_type=refresh_token&refresh_token=(my refresh token)&client_id=52aFq3X...

I have a website using the hosted iFrame on the addPayment page (https://accept.authorize.net/customer/addPayment). A hacker is starting with this page, then seems to have a script that tries hundreds of card numbers per minute until the page success...

I'm trying to add a payment method to an existing customer. For an existing (authenticated user), I created a customer in CIM, then I'm showing the use the addPayment page, and after filling out all the fields, it shows, "The record cannot be found."...

When prompting the user for a new payment method, is there a way to provide default values for the billing address? I was hoping that by providing a shipping profile, this would be used to provide defaults for the billing address. If I can't provide ...