payeePricingTierId property
This field is only enabled for selected merchants/partners to use and provides the ability to trigger a specific pricing rate/plan for a payment transaction. The list of eligible 'payee_pricing_tier_id' would be provided to you by your Account Manager. Specifying values other than the one provided to you by your account manager would result in an error.
Implementation
final String? payeePricingTierId;