Token identifier expected before if condition

Hi Anonymous ,

You need to assign the IF statement to a variable. And in your code, the red circles are not recognized by PowerQuery. 

Since I'm not sure of the exact output you want to achieve, I've only created a code that can be executed.

(APIInsightsID as text)=>
(Counter as number)=>
let
Source = Table,
ID = Table.TransformColumnTypes(Source,{"App Insight ID ", type text}),
APIInsightsID = "",
Counter = 1,
condition = if Counter > ID[Index]{0} then APIInsightsID 
            else if ID[App Insight ID] <> APIInsightsID then Counter+1
                else APIInsightsID = ID[App Insight ID]

in
condition

Best Regards,
Winniz