Fee Setting Plans
Fee setting plan retrieval by ID — configures payer fee rules (recoup, surcharge, absorb) per payment rail
📄️ Get Fee Setting Plan
Retrieves a **Fees & Incentives** plan by ID — configures **payer fee** rules (recoup, surcharge, merchant absorb) per rail, including nested rail settings (`cardPaymentFees`, `networkBankPaymentFees`, `achBankPaymentFees`, `amexPaymentFees`) with **`customRate`**, **`customFlat`**, and **`feeSplitType`**.