Starting at Pro 2.3, EnableNetworkTopology_un fails when I use the "ONLY_ERRORS" option:
ERROR 999999: Something unexpected caused the tool to fail. Contact Esri Technical Support (http://esriurl.com/support) to Report a Bug, and refer to the error help for potential solutions or workarounds.
It works just fine without the "ONLY_ERRORS" option. Then when I disable topology and unregister as versioned, I run into the same problem again.
Has anyone else seen this?