Authorize.net - CCV Handling Filter
The Card Code Verification (CCV) Handling Filter compares the three or four-digit card code submitted in a transaction with the card code on file at the issuing bank. Based on results of the comparison, the bank returns a CCV response code. That works great for online sales, but not for in-person transactions where the CCV is not requested. To avoid unnecessary rejections, we urge you to use the settings shown below.
Where to find the CCV filter
Tools > Fraud Detection Suite > Transaction Settings > Enhanced CCV Handling Filter