The information in this article applies to:
When I try to place a built-in fixture or appliance into a cabinet, a message states:
What am I doing wrong?
Some appliances in the library are intended to be placed into a base cabinet or full height cabinet. For example, dishwashers and trash compactors are designed to be inserted into base cabinets, while some refrigerators and wall ovens can be inserted into full height cabinets
If you try to place a built-in appliance into a cabinet, and this dialog displays, then the selected appliance is larger than the cabinet you are trying to place it into, so increase the size of the cabinet and then attempt to place the appliance again.
To save time, increase the width of the cabinet more than you think the appliance will require. Then, place the appliance into the cabinet. Finally, resize the cabinet down to the smallest size that the program will allow and adjust its position as needed
While most built-in appliances fit into cabinets with a standard depth of 24" (600 mm), bear in mind that it is possible for an appliance to require increasing the depth as well as the width.