I am not an expert to ArcGIS Online, however, I managed to publish a couple of services from my hosted server. The question I would like to seek for advice is...
From a service I published, I have a layer called 'parcel' and would like to setup a hyperlink for each individual parcel using a field containing tax id (GeoID), which I would like to link to the County Appraisal District. However, there are over 15,000 parcels to add link to and maintain once link being established. Is/are there a method to add hyperlink from the existing field, and how to maintain the data to current when the Appraisal District made changes on their site? Any assistance is greatly appreciated.