Enterprise 10.6. I've published a feature service from my SQL database that is versioned, has editor tracking, and contains attachments. The feature service capabilities include Create, Query, Update, Sync, Delete.
This feature service is included in a web map in Portal. When I attempt to download an offline area in Collector it fails and the following is shown in the Server log:
Unable to process request. Error handling schema request: java.lang.Exception: java.io.IOException: Server object extension 'versionmanagementserver' not found.
I have another feature service published from the same SQL database that does not give me this error. However, the feature service that works does not contain attachments or have editor tracking.