From portal 10.3.1 I've published a simple point feature class as a feature service with the sync function enabled, the feature class is registered as versioned from an enterprise GDB. The feature class has attachments and a related non-spatial table also has attachments.
The service publishes successfully and I can make edits to both the point feature class and the related non-spatial table when connected, but when I try to download the map to my device to work offline (iPad running ArcGIS Collector for iOS), I get the following error: The operation couldn't be completed. Error in obtaining version for Sync. I get this error regardless of whether i publish from the default version or a child version off of the default version.
When I publish I've tried both the Create a version for each "Downloaded Map" and "User" both return the same error.
Has anyone run into this issue before? If so, any ideas what I may be doing wrong?