Has anyone had success in federating an older server site with a newer portal site? The documentation I can find states this:
'However, you can federate some ArcGIS Server sites with a portal of a more recent version'
Common questions about version compatibility—ArcGIS Server | Documentation for ArcGIS Enterprise
For a newer 11.3 Portal site, would an older 10.8.1 or 10.9.1 Server site be compatible?
Thank you!