Step-by-step instructions for managing Address Verification Services (AVS) and/or Card Security Code (CSC) settings in the Merchant Service Center for eCommerce.
Note: If you use an Innovative Gateway (IGS) or Authorize.net account as your payment gateway, the settings presented here will not affect card acceptance for those account types.
There will be a box labeled Transaction Security Settings. It says "To change your transaction security settings for this account, click here." Click here.
You will receive a confirmation that the change has been successfully applied. Click OK.
NOTE: In order for these settings to work properly, verify with your shopping cart provider that they have the same settings on their end.