This may be something already known but do vRO Action based dropdowns on Request forms not display in ServiceNow? In ServiceNow I get a dropdown but its empty see attachment
Also is there a way to hide Custom properties from displaying on the ServiceNow form?
There is no support available for vRO action and this is in pipeline. This will be part of next release of the plugin.
Please refer Thread Hidden fields being displayed
or Refer topic 'Add Field IDs to the Exclusion List' from documentation page 25.