I send Measurment Protocol on purchase and refund.
I created a simple report: Raw: Google Ads Campaign Values: Google Ads cost Purchase revenue Refund amount
Purchase revenue shows only revenue without refunds. Refund amount total 0
On other reports like source / medium, Refund amount and Purchase revenue works fine (also for Google / CPC). I connected GA4 to Google Ads.
I need to see Purchase revenue - refunds for Google Ads campaigns.