get https://sandbox.dev.clover.com/v3/merchants//order_types
Merchants have the ability to create custom order types via the Setup App (https://www.clover.com/setupapp). These custom order types can be associated with a System Order Type (see /v3/merchants/{mId}/system_order_types). Custom Order Types can support items in all categories (filterCategories=false) or a subset of the merchant's categories (filterCategories=true and categories property contains the list of supported categories). Note that when expanding the categories for an order type, they will only be returned if this orderType only supports a subset of the categories (filterCategories=true). If the orderType supports all categories (filterCategories=false) then you should make a GET request to /v3/merchants/{mId}/categories.