URL = "https://34.239.8.24:44300/sap/opu/odata/sap/ZRECEASY_PO_GL_POST_SRV/ZRECEASY_PO_GL_POSTSet"
    auth_get_po_data ='S4H_FIN','Welcome1'

    data = { "BUKR": 1710,"EBELN": 4500000004, "EBELP": 10,"EINDT": "20161103","OPEN_AMT": "3,000.00","PERC_REC_AMT": 0,"REC_AMT": 0, "ITEM_AMT": "3,000.00","INV_AMT": 0,"WAERS": "USD", "UPD_BY": "","UPD_DAT": "", "INV_APP": "", "SAKTO": "null", "KOSTL": "null", "AUFNR": "", "DESC": "", "KUNNR_NAM": "", "KUNNR": "", "COMMENT": "" }

    client = requests.session()

    client.get(URL, verify=False)
    print client.cookies
    csrftoken = client.cookies['csrftoken']
    print csrftoken

    login_data = dict(username="S4H_FIN", password="Welcome1", csrftoken=csrftoken, next='/')
    r = client.post(URL, data=data, auth=auth_get_po_data, verify=False, headers=dict(Referer=URL))
    print (r.text)