Comma-separated list of related data to include. Valid values: affiliate, affiliate_program, referral. You can combine multiple values: affiliate,referral.
The commission status. Valid values: pending (on hold period, auto-updates to ready_for_payment when period expires), pending_manual_approval (same as pending but requires manual approval), ready_for_payment (approved and ready for payout in next cycle, not yet paid), paid (confirmed and already paid out), declined (rejected, not paid and excluded from payouts).