Auction UC - Bid on Item

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1. Bid on Item
1.1 Brief Description
When browsing an item currently available via auction (see the Browse Auction Catalog use case), a Buyer may opt to place a bid on the item. The entered bid must be greater than the current bid by an amount greater than the minimum bid increment specified by the Seller. Once accepted the entered bid becomes the current bid.
The User must be signed in in order to bid on an item. See the Sign In use case.
If the auction has been closed, the bid is not accepted. See the Close Auction use case.
If the Buyer has any pending payment notices, a message is displayed to the Buyer, reminding the Buyer that payment for the notices must be made (i.e., new credit card information must be entered) before the User can participate in any auction (as either the Buyer or the Seller. New credit card information can be entered via the Manage Account use case.