When looking at an MF order on your orders page, the following statuses are possible.
Pending - This order is still pending, it has been paid for but is still processing. There is a window of time between the buyer confirming the sale and their payment being accepted.
Unpaid - This order has not yet been paid for.
Accepted - This order has been accepted, the marketplace has been notified of the intent to fill this order.
Filled - This order has been accepted and quantity has been reserved and removed from available quantity.
Complete - The market has been notified that this order has been filled and the marketplace has been updated with tracking information. (Please note that the filled status will only change to complete once tracking information has been entered either through your fulfillment software or manually in the order through Listing Mirror.)
Cancelled - This order has been cancelled in Listing Mirror.