Validity means timeout which you already explained i.e. 30minute of inactivity. Yes, I know its a Text value with a numeric value at the end. Sharing few scenarios below, if you can answer then it would be great. Scenario 1: Login for the first time in a website so Visit Number will be Visit Number ...

@Jennifer_Dungan : I did not find any Adobe Docs URL which explains validity of Visit Number. Can you explain how number is incremented. Can i use Visit Number as one session? Kindly share if you have any reference docs URL.