In this way you will be able to see the reason why the unit is not listed as available, for example due to an exceeded availability for that particular unit type.

Nevertheless, you will be able to proceed with the booking but the system needs to alert you about the discrepancies in order to be able to act on it on time.

*even though the system allows creating deliberate overbookings, you insert them at your own risk so please double check the real availability of your calendar