post
https://sandbox.pismolabs.io/rates/v1/exchange-rates
Define the exchange rate for international transactions.
You must use this endpoint or the Pismo control center to define the exchange rate for today or tomorrow.
Exchange rates are defined at the organization level but, optionally, you can define rates for a specific program and the platform uses this rate and not the org rate for all program-related transactions.
Note: For more information, refer to Exchange rates for international transactions.