Availability issues on the Tape Chart are typically the result of Bookings with Unassigned Rooms or Group Booking Allocations. Because of this, the available number of rooms displayed on the Tape Chart may be less than what you thought or display a 0 or -1 on the Tape Chart. See Tape Chart
All availability is based on Room Type and the number of available rooms in that room type. This means that when a booking is made either at the Front Desk or booked online channel, it is assigned Room Type, but not necessarily given a room assignment.
Since availabiltiy is reserved by Room Type, the number of remaining available rooms in the Room Type is displayed on the Tape Chart. For example, the QUEEN Room Type has a total of 6 Rooms. Today, 2 are booked, leaving 4 available on the Tape Chart.
Remember, only bookings with an assigned room will appear on the Tape Chart. If a booking is not assigned a room, then the availability will be deducted from the number displayed on the Tape Chart.
Some properties will choose not to assign a Room until closer to check in or the room assignment may have been inadvertently missed at time of booking. This is usually it's due to a reservation that has been booked into a Room Type, but no Room Assignment has been made. See Room Assignment
In addition, Group Booking allocations change the number of rooms available dispalyed on the Tape Chart. If a group booking is created and allocated room types, but no individual bookings have been added, then the availability displayed on the Tape Chart will reflect those allocations.
To resolve any issues with availability appearing on the Tape Chart, search for both Individual bookings unassigned rooms.and review allocations for Group Bookings.
Individual Bookings with Unassigned Rooms
There are two ways to find Individual Bookings with no Room assignment:
Once you have created the list you need:
Review Group Booking Hard Allocations
If there is still a question about availability, then it's also a common situation that a Group Booking has a Hard Allotment that is pulling availability. See Hard and Soft Allocations
This will show on a Search using 'Begins on:' and 'Ends on:' as well. But if you wish to only view Groups, go to Bookings | Group Bookings and search on all Groups to see what dates of a Group might be holding back availability for the dates you are analyzing. See Group Bookings: Rooms Allocated Exceed Available Rooms.