We are using collector to undertake habitat field surveys on android devices - using collector version 18.0.3
The initial preparations (basemap, layer, etc) have been set for offline use in Arcgis online. the offline data collection does not lead to any problem, but as soon as we try to sync the offline edits an error message appears:
Service=https://services9.arcgis.com/RDkhya9AEnZa14Tz/arcgis/rest/services/NAMEOFTHELAYER/FeatureServer:Operation rolled back.
I see that this issues has come up before but none of the answers seem to apply. None of the feature layers have been overwritten or edited in GISonline while the users were collecting the data on the devices.
We have tried the process several time with different layers and through different devices (all android) but the problems remain.
Any help would be greatly appreciated.