"Insufficient permissions to fulfill the request" when fetch a order detail

[nexrc_store]

https://api.ebay.com/buy/order/v1/purchase_order/[ebay_order_id] with authorization bearer token then response:

{

    "errors": [

        {

            "errorId": 1100,

            "domain": "ACCESS",

            "category": "REQUEST",

            "message": "Access denied",

            "longMessage": "Insufficient permissions to fulfill the request."

        }

    ]

}