Error Message:

Authnet Product Name = does not match any DAP Product Name. But REJECTING MISMATCH because of your Config settings (Product Mismatch)

Solution:

The Authnet global ipn (silent post url) points to the dap script, so if you use the same Authnet account to sell non-dap products, the notification will still get sent to dap. DAP will reject that notification with this message. You can ignore this error if this happens when someone buys a non-dap product.

Also, if you process refunds or make updates within Authnet account, Authnet will send notifications to dap script. DAP will only process the payment success transactions and ignore the rest. But it does send out this email before throwing the IPN away.

So if you receive this message when you make changes to Authnet account or when you use the same authnet account to sell non-dap products and someone buys a non-dap product, you can ignore it.