You can build your storefront with SFRA and the plugin_commercepayments overlay plugin, and then configure Commerce Payments in Business Manager to integrate your Commerce Cloud instances with the Stripe payment platform.
[the seller]
with the appropriate name in the
sepa_debit.message.mandate
key name entry in
plugin_commercepayments/cartridges/plugin_commercepayments/cartridge/templates/resources/salesforcepayments.properties
.