I have a Survey123 that I'm migrating to SDE. Here are the steps I've taken so far:
1. Exported the data from AGOL and loaded the tables in SDE, then made sure all the necessary permissions were applied.
2. Created service on STANDALONE SERVER (I think that not involving Portal is a potential hang up here, so I want to stress this point).
3. Used service endpoint to create an item in AGOL - embedded the credentials for the service in the AGOL item.
Now, I'm stuck on the next step: Create a survey from the AGOL item (from step 3). I keep getting vague errors that say "The custom feature service submission url is not compatible with this survey", even though it's the exact same schema that I brought in from AGOL. I've truncated the tables in SDE just to see if I needed an empty table to start out with but that didn't work. I also checked that both the feature class and the attachment table have indexed globalid fields (how it came in from the geodatabase I exported from AGOL) and use the globalid fields in the relationship class.
Can anyone provide any guidance on what I should try to resolve this?