Error: Charge failed E00027 Bill to Zip/Postal Code is Required. What's going on?

Begin by checking your form fields: Account >> Settings >> Payment forms >> Form fields

If any of the fields in your form fields page are marked 'required', Authorize.Net will not process payments without the information they solicit, instead it will generate an E00027 error (as shown in the screenshot below). To successfully charge customers using the Chargebee interface make sure the Zip Code box is not marked as required.