If you have generated a space that has its boundaries calculated by an area calculation standard, you may need to classify the space according to the selected standard, in order to provide the standard with the necessary information to calculate the boundaries. For example, the BOMA standard requires classifying spaces according to their space type, as the space type is relevant for determining boundary offsets.
For example, if you have selected the BOMA area calculation standard for your drawing, the BOMA classification definition is displayed.