I downloaded both
SearchQueryPerformanceReport and
KeywordsPerformanceReport from API. Both reports use the same date range.
Selected rows associated with one keyword, I found the aggregated Impressions in SearchQueryPerformanceReport is much smaller than the one in KeywordsPerformanceReport, like 526 vs 361,468.
I used 'Keyword ID' field in both report to select rows.
Did I do something wrong or they are supposed to be different?