Problem
This article deals with the following error:
Validation failed: PersonsValidateCurrencyFailedCurrencyNotFound: Person does not support currency
This error occurs only on the test account if the merchant uses the VivaWallet payment gateway and a currency other than CZK.
The test gateway is set to a VivaWallet account which uses the CZK currency, because VivaWallet does not support multiple currencies.
Solution
Use the CZK currency for testing purposes or to test the gateway on your production environment (using the "env": "live" attribute).