Please add the Amazon Ads API v3 Sponsored Products purchased product report (spPurchasedProduct) as a Windsor report. Windsor currently offers this only for Sponsored Brands (sponsored_brands_purchased_product).
The report is keyed by advertised ASIN x purchased ASIN, with units, sales and purchases for the purchased ASIN at 1d/7d/14d/30d (fields such as unitsSoldOtherSku7d, salesOtherSku7d, purchasesOtherSku7d, plus advertisedAsin, purchasedAsin, campaign and ad group).
Why: it lets us reassign ad-attributed units to the ASIN the customer actually bought, so per-ASIN paid vs organic sales reconcile with the Business Report. Today a click on one colour variant that leads to a purchase of another colour is credited only to the advertised ASIN.