I have a similar scenario: We have a weed infestation layer in a read-only service and a weed spraying layer in an editable service. I would like to use something like Intersecting Feature and Intersecting Count from the Attribute Assistant to help the user populate the infestation ID when they create a new weed spraying feature in Collector. Users in Collector can inspect the infestations, copy an infestation ID, and paste the ID in the new spraying feature, but this is prone to error. I do not create a relationship class between these data because of the read-only requirement for infestations.
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