Originally Posted by ijgordon
...So basically an AONE* or DONE* will never need to be booked into L inventory? (i.e., there is no "L" in the "First Class Inventory" column of the table, only A or Y)
That's not quite the way to read the table. If there's no inventory in the column you paid for, you look in the next column to the right, and book into the class shown for that column.