Payment method, like **eftpos_australia** or **mc**. See the [possible values](https://docs.adyen.com/development-resources/paymentmethodvariant#management-api).
country
array
Countries, to filter different surcharge amounts for domestic or international cards.
currencies
array
Currency, and surcharge percentage or amount.
sources
array
Funding source. Possible values: * **Credit** * **Debit**