I created an Indoors map in ArcGIS Pro using the licensed Indoors tools. I published the layers to AGOL where we have Indoors licensed.
I created the map and configured all the layers to be floor aware in the settings of the Map Viewer.
I created an Indoors Viewer App, but on the first screen, I get an error on the first page of the Configure App screen. 'No categories' and 'No Units layer' for the map I selected.
I understand the 'No categories' error since I didn't create any categories. However, there is a units layer defined on the map, and the floor aware filter works for this map (see screenshot).
I'm not sure what it is looking for or what I have missed that would cause this error.