# product ↔ Response parameter ## `` The definition of a Ratepay payment product | Type | Condition | | --- | --- | | xs:string | Mandatory | ## `` The (technical) name of the payment method. This value must be used to identify the selected payment method. | Type | Condition | Enumeration | | --- | --- | --- | | xs:string | Mandatory | - `INVOICE`- `INSTALLMENT`- `ELV`- `PREPAYMENT` |