Error: Function ISNEW may not be used in this type of formula

Today while creating a workflow rule, I wanted to use ISNEW() function to check whether a record has been created or updated. The evaluation criteria I had selected was "created, and any time it’s edited to subsequently meet criteria". When I clicked on 'Check Syntax' button, it threw error "Error: Function ISNEW may not be used in this type of formula". I was under impression that it should be available to all criteria, but 'created'. After checking docs, I found that we can use 'ISNEW()' function only with evaluation criteria "created, and every time it’s edited" and it can't be used with evaluation criteria "created" & "created, and any time it’s edited to subsequently meet criteria".

Be careful before deciding upon selection of "Evaluation Criteria" and use of function within!

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