Authorize.net “Bill to address required”

Most AuthorizeNet users will never encounter this issue, however, in some cases AuthorizeNet fails to complete a charge request due to this validation error being triggered. The outcome is a warning message on the checkout page which may look like this:

To correct this, login to your AuthorizeNet account and check if the field is required under Account → Settings → Payment Form → Form Fields.

If it is, simply remove the requirement and you should be all set!