You are sharing a map image layer that contains a layer or table with fields that are set to not be visible. The field will be indicated by the first <value> parameter and the dataset will be indicated by the second <value> parameter.
When sharing the following dataset types, all user attribute fields must be set to visible in the layer or table properties:
- Trace network
- Utility network
Solution
Hover over the analyzer message. Click the Options button 
that appears and click Select Layer In The Contents Pane.
- On the ribbon, under Feature Layer, click the Data tab. In the Design group, click Fields
. In the fields view of the table, check the box in the Visible column to make the field visible.
For more information on field visibility, see Create and manage fields.