Hi Subbu,
As per Question, you are doing this by load statement.
If this is case, then you can't use aggregate functions in load statement without using group by clause.
But In your case using group by clause is not logical and will not either solve your problem.
So you first need to take a variable above this load statement and assign it value as max(Created_date) :
Let vMaxDate = max(Created_date).
Then in load statement write the variable instead of max(Created_date). like :
if(Created_date = date('$(vMaxDate)','MMM') ,[2015 Count 1],) as current2015count
This will solve your concern.
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