Checkout attempts lists the number of times the customer failed to complete their checkout before finally succeeding.

What Will I See?

For most orders, you'll see just a single message: "Authorization successfull." This indicates that the customer typed in their card information correctly on the first try, and that their billing address matched up according to the settings you have with your payment processor.

In other cases, you may see one or more messages that say "Authorization declined: No Match" or something similar before the "Authorization Successfull" message. This can mean any of several things:

Do failed authorizations mean an order is fraudulent?

Failed authorizations are not a very good indicator of fraud by themselves. However, they can be a powerful tool when used in combination with other indicators (especially billing address/shipping address/location mismatches).