I have a FGDB with many feature classes. I need a "FeatureID" field it should be auto generated with a sequence number while adding a new feature in Edit session. It is like the existing field "OBJECTID". It is like auto numbering while adding new feature

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    Sounds like a job for Attribute Assistant with a GenerateID class. I don't know enough about implementing it to give you a full answer, but hopefully that will point you in the right direction. – TeddyTedTed Sep 17 '19 at 8:02

As you have tagged your question as ArcGIS Desktop I assume you are open to using ArcGIS Pro. If so explore the Attribute Rules as a way of auto numbering. Be aware of the cautions in the help file as you'll be changing the version of your database and ArcMap users won't be able to access the data.

  • I am using Arcmap 10.7 – Justin Jose Sep 18 '19 at 11:01
  • Here is a useful blog giving instructions on how to set up a unique incremental ID. But of cause this is for ArcPro. – Hornbydd Sep 18 '19 at 12:13

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