GET /api/v1.0/financialsMicrosoft's revenue report: one row per purchase line per month. Join AssetId to the SaaS subscription id; use PurchaseRecordId + LineItemId to identify a single purchase line. Metered usage appears as monthly SKU-level totals (BillingModel: "UsageBased"), not per dimension; use /usage for that.
Three currencies appear: CC is the customer's transaction currency, PC is your payout currency, USD is Microsoft's reporting currency. TransactionAmount* is what the customer was billed, EarningAmount* your share after Microsoft's fee, IncentiveRate your share in percent (for example 97). Expected payout in your payout currency is EstimatedRevenuePC × IncentiveRate / 100. PayoutStatus runs Unprocessed → Upcoming → Sent, with EstimatedPayoutMonth and PaymentSentDate.
Payouts flow from Microsoft to your Partner Center account. WeTransact is not in the money path.