I have a suite of empty feature classes I use for ESRI Collector surveying. They are in a FGD. I want the PhotoID field in my Photos feature class to contain unique records, so fieldworkers don't keep accidentally re-using numbers. I am having a lot of trouble establishing this. Any suggestions how to best do this?

  • Create attachments and forget about unique photo name. – FelixIP May 2 '19 at 20:24

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