To display potential points to members on the checkout page, it is mandatory to include the "product_id" parameter, which specifies the product for which potential points will be presented. Additionally, you have the option to include the optional fields like "price," "quantity," and "category" to provide more context.

The code format is as follows:

[{

"product_id": "product_five",

"price": 20,

"quantity": "1",

"category": "cups"

},

{

"product_id": "product_six",

"price": 20.00,

"quantity": "3",

"category": "butter"

}]