I am struggling as to why I am still getting this error. I am deploying Software Center to my AD server. Both servers run 2016. I followed this tutorial: https://www.windows-noob.com/forums/topic/4428-using-sccm-2012-in-a-lab-part-3-configuring-discovery-and-boundaries/. I did notice that under software library/packages, that the cm client package failed to distribute, so not sure if that's part of this, or that's a separate problem. I've done some research, and people have said that you failed to define the DP.
Boundary Properties:
Boundary Group Properties: