Search Ads API Ad Group Report Group By ageRange and deviceClas

Hi, 

I have a custom application that creates a standard HTTP POST request with custom headers, specific campaign id, and a custom date range. Using version 2 of the search ads API, I was successfully able to retrieve data in JSON format. I then extracted those data into an excel file just to group the ageRange, impressions, and localSpend. Now, when I tried to compare it with the excel file I downloaded from the Search Ads UI, with the same specific campaign & date range, it looks like the impressions are not matching, particularly for the ageRange where values are equal to null. The sum of impressions (JSON extracted data) is a little bit lower compared to the excel file I downloaded. The spend seems accurate though.
Search Ads API Ad Group Report Group By ageRange and deviceClas
 
 
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