These are the available order statuses, in chronological order:

StatusDescription
SubmittedThe order has been created.
RejectedThe order was not approved.
PendingThe order has been approved and sent to Pearson.
ProcessingThe order has been seen by a Pearson employee and is being prepared.
BackorderedThe ordered materials are not currently available, but will be sent when they are available.
TransitThe order has been sent.
DeliveredThe order has been received.