If you are planning on using AVS (Address Verification) and/or CCV (Credit Card Validation) checks it's important to configure your Authorize.net account correctly.
The AVS and CCV checks are additional; this means that those checks could fail but you could still have a successful transaction. In the Authorize.net account you can specify which response you would allow. It's important to allow all responses in this account and to limit the responses in the Authorize.net payment module settings in PrintShop Mail Web.
If the Authorize.net account is configured to reject certain AVS/CCV responses those payments are not automatically voided. The merchant should void them using the Authorize.net account site. Therefore it's better to accept all responses on the account site and configure PSMW to reject certain responses. That way PrintShop Mail Web will first do an authorization request and if the AVS/CCV fails it will then automatically do a void to release the funds on the credit card.
Please note that with a developer test account you can't test AVS/CCV responses