Teams - Cannot add room to the meeting

When you are trying to add a room to your Teams meeting using Teams application, you get an error saying that no rooms are available. However, in the Outlook all seems to be OK.

Solution is simple - you need to add a room list which consist of your room/rooms

New-DistributionGroup "ENTER YOUR ROOM LIST NAME LIKE BUILDING OR OFFICE HERE” -Roomlist

Add-DistributionGroupMember -Identity "PREVIOUSLY CHOSEN ROOM LIST NAME" -Member "YOUR ACTUAL ROOM NAME GOES HERE"