I'm migrating from ArcGIS Enterprise 10.6.1 to 10.9.1 and we still need to publish some services from ArcMap to ArcGIS Server. I'm having success publishing everything from ArcGIS Pro but having difficulty publishing from ArcMap. I'm getting the error above using the same data stores that succeeded in publishing from ArcGIS Pro.
Any ideas? I have yet to publish successfully from ArcMap even though it should technically work still at 10.9.1.