I found this article:
I tried to run through the troubleshooting but none of these options worked.
Facts: I can publish regular data from a regular coordinate system.
I am using a custom coordinate system and converted CAD data into a file geodatabase.
I have never had an issue with publishing converted CAD data from a custom coordinate system.
I tried one layer at a time and it still would not publish.
Are there any other ideas on what I can try to publish this data to the web?
I've even tried overwriting an existing hosted feature layer and creating a new feature layer. I do not have time-enabled data (as far as I know). There is no custom symbology.