Not able to call checkout API to fetch add to cart produst details of cutomers.

Hi Team,

I am encountering an error while calling the API below from Postman to fetch the add-to-cart product details of customers. Could you please assist me?

API Endpoint:
https://4113efa8bbda90cb021f58fca896e8ab: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@sylphy.myshopify.com/admin/api/2023-04/checkouts/bd5a8aa1ecd019dd3520ff791ee3a24c.json

Response:
{
“errors”: “[API] This action requires merchant approval for the read_checkouts scope.”
}

Your help would be greatly appreciated