Error 'onCreateReservation - Error creating reservation (status code 400)' when reserving an amenity

When a resident reports the exact error "Error creating reservation. AxiosError: Request failed with status code 400" (onCreateReservation) when reserving an amenity (court, lounge, pool, etc.): 1) This has already been fixed: ask them to update the app to the latest version (2.53.4.6). 2) Please note that multiple reservations are NOT allowed: if they already have an active reservation for that area or time slot, the system will reject it. (Fixed in 2.53.4.6, 08/27/2026.)