In the Circulation Activity report, what do the format types ‘eBook (Pending)’ and ‘Audiobook (Pending)’ mean?

Users can borrow a title but are not required to choose a format at checkout. Therefore, until the user selects the format, the checkout is categorized as ‘Pending.’ Checkouts will remain in the ‘Pending’ category until the user selects a format. If the loan expires before then, the checkout will remain as ‘Pending.’