Authorize.Net Error: Customer ID is required.
October 31st, 2014
You see something like this in your Authorize.Net debug log:
[error_message] => AuthorizeNet Error: Response Code: 3 Response Subcode: 2 Response Reason Code: 33 Response Reason Text: Customer ID is required. )
To disable this go into your Authorize.net account and click:
Account > Payment Form > Form Fields
And then proceed to disable all the required fields in the billing section. The same applies for any error regarding to other billing details.