I can read sale,but where I refund sale,the API return PERMISSION_DENIED. ==== https://api.sandbox.paypal.com/v1/payments/sale/5LG41347KJ201330R/refund { "name": "PERMISSION_DENIED", "message": "Permission denied.", "information_link": "https://developer.paypal.com/docs/api/payments/#errors", "debug_id": "1079024faebad" } === https://api.sandbox.paypal.com/v1/payments/sale/5LG41347KJ201330R { "id": "5LG41347KJ201330R", "state": "completed", "amount": { "total": "2.00", "currency": "USD", "details": { "subtotal": "2.00" } }, "payment_mode": "INSTANT_TRANSFER", "protection_eligibility": "ELIGIBLE", "protection_eligibility_type": "ITEM_NOT_RECEIVED_ELIGIBLE,UNAUTHORIZED_PAYMENT_ELIGIBLE", "transaction_fee": { "value": "0.37", "currency": "USD" }, "invoice_number": "", "create_time": "2021-10-18T06:32:26Z", "update_time": "2021-10-18T06:32:26Z", "links": [ { "href": "https://api.sandbox.paypal.com/v1/payments/sale/5LG41347KJ201330R", "rel": "self", "method": "GET" }, { "href": "https://api.sandbox.paypal.com/v1/payments/sale/5LG41347KJ201330R/refund", "rel": "refund", "method": "POST" } ] }
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