Diagnosis
The number of rooms does not match the number of rooms entered for"Room types".

System Response
If you confirm the message by pressing the RETURN key, the systemautomatically corrects the number of rooms.

Procedure
You can either press the RETURN key and thus automatically correct thenumber of rooms or manually enter the number of rooms.
If the number of rooms is correct here and too many or too few roomshave been entered for "Room types", you can cancel the save functionvia "Cancel" (F12) and correct the number of rooms via the function"Goto room types".