Purchase Receipt via Rest API

Hi Guys, i am trying to process a purchase receipt of a purchase order but i keep getting this error below. Can you kindly help? I have followed the Acumatica example found here : https://help-2021r1.acumatica.com/(W(61))/Help?ScreenId=ShowWiki&pageid=81e5ec25-09f7-421a-8f80-01b6b71d38c9

EndPoint: baseURL/entity/Default/18.200.001/PurchaseReceipt

Request

{

  "VendorID": {"value": "DIG001"},

  "Location": {"value": "MAIN"},

  "Details": [

    {

      "POOrderNbr": {"value": "PODP003483"},

      "POOrderType": {"value": "Normal"}

    }

  ]

}

Error:

        "innerException": {

            "message": "An error has occurred.",

            "exceptionMessage": "PO line number, PO type, and PO number must be filled in for the system to add the purchase order to the details.",