Credit Card updation in Sales Order

  Hi Team,

I would like to know the result of the below scenario:

-->In Order Management, when we create the Sales Order and enter the credit card details. 

If user enters the wrong credit card number for the different Card Brand 

- Does Order accepts it? 

-If it accepts while creating the order, does it put a hold while picking.

-Where can the user go and see what are all the orders that were stuck with card hold - I mean any report?

Please provide the info on the above ASAP, this would really help me a lot. Thanks in advance.