Foreign-Currency Reimbursements

POST /reimbursements now accepts an optional reimbursement-level exchange_rate.

For reimbursements whose item currency differs from the subsidiary currency, provide an exchange rate or omit it to use Rillet's rate for
reimbursement_date. All items must use the same currency. Mixed item currencies and unavailable FX rates return validation errors.

Applies to V3 and V4.