# VoucherifySdk::RewardsUpdateRequestBodyParametersCoin ## Properties | Name | Type | Description | Notes | | ---- | ---- | ----------- | ----- | | **exchange_ratio** | **String** | The cash equivalent of the points defined in the `points_ratio` property. | [optional] | | **points_ratio** | **String** | The number of loyalty points that will map to the predefined cash amount defined by the `exchange_ratio` property. | [optional] |