You are sharing a utility network or trace network as a feature layer that references registered data. You did not select the Only allow true curve updates by true curve clients option. When you share a utility network or trace network dataset as a feature layer, this setting is required.
The <value> is represented by the dataset type being published:
- Utility network
- Trace network
Solution
Choose to allow true curve updates by true curve clients only.
Hover over the analyzer message. Click the Options button
that appears and click Show Feature Properties. In the Share As Web Layer pane, on the Configuration tab 
, check Only allow true curve updates by true curve clients. This requires that the Allow geometry updates and Allow update of true curves options are enabled.
Additional information
Editing true curves through a client that does not support true curves creates densified lines that are not supported by a utility or trace network. To ensure that true curves are maintained, only clients that support true curves are allowed to edit geometries that have true curves.
Learn more about editor permissions for feature services