装运API插入而不是更新

Question

我正在尝试通过API创建一个货件（端点版本17.200.001）。我首先用最少的字段构建JSON，以便正确插入。但是，当我使用新的Shipment编号以及其他字段和子集合更新JSON时，它将执行插入操作而不是更新操作。

我的API网址是http://localhost/acuroyal172100034/entity/default/17.200.001/Shipment。我的插入JSON是：

{
    "CustomerID": {
        "value": "CVS HEALTH"
    },
    "LocationID": {
        "value": "MAIN"
    },
    "ShipmentDate": {
        "value": "2019-07-17T00:00:00-04:00"
    },
    "WarehouseID": {
        "value": "002"
    }
}

我的更新JSON是：

{
    "BaseCurrencyID": {
        "value": "USD"
    },
    "ControlQty": {
        "value": 1
    },
    "CreatedDateTime": {
        "value": "2019-07-17T15:22:45.953-04:00"
    },
    "CurrencyID": {
        "value": "USD"
    },
    "CurrencyRate": {
        "value": 1
    },
    "CurrencyViewState": {
        "value": false
    },
    "CustomerID": {
        "value": "CVS HEALTH"
    },
    "Details": [
        {
            "Description": {
                "value": "1833137 Body MM016997"
            },
            "FreeItem": {
                "value": false
            },
            "InventoryID": {
                "value": "0036920"
            },
            "LineNbr": {
                "value": 1
            },
            "LocationID": {
                "value": "01P"
            },
            "LotSerialNbr": {},
            "OpenQty": {
                "value": 0
            },
            "OrderedQty": {
                "value": 1
            },
            "OrderLineNbr": {
                "value": 1
            },
            "OrderNbr": {
                "value": "036241"
            },
            "OrderType": {
                "value": "SO"
            },
            "OriginalQty": {
                "value": 1
            },
            "ShippedQty": {
                "value": 1
            },
            "UOM": {
                "value": "EACH"
            },
            "WarehouseID": {
                "value": "002"
            }
        }
    ],
    "EffectiveDate": {
        "value": "2019-07-17T00:00:00-04:00"
    },
    "FreightAmount": {
        "value": 0
    },
    "FreightCost": {
        "value": 0
    },
    "FreightCurrency": {
        "value": "USD"
    },
    "GroundCollect": {
        "value": false
    },
    "Hold": {
        "value": false
    },
    "Insurance": {
        "value": true
    },
    "LastModifiedDateTime": {
        "value": "2019-07-17T15:23:31"
    },
    "LocationID": {
        "value": "MAIN"
    },
    "Operation": {
        "value": "Issue"
    },
    "Orders": [
        {
            "OrderNbr": {
                "value": "036241"
            },
            "OrderType": {
                "value": "SO"
            },
            "ShipmentNbr": {
                "value": "036971"
            },
            "ShipmentType": {
                "value": "Shipment"
            },
            "ShippedQty": {
                "value": 1
            },
            "ShippedVolume": {
                "value": 0
            },
            "ShippedWeight": {
                "value": 0
            }
        }
    ],
    "PackageCount": {
        "value": 0
    },
    "PackageWeight": {
        "value": 0
    },
    "ReciprocalRate": {
        "value": 1
    },
    "ResidentialDelivery": {
        "value": false
    },
    "SaturdayDelivery": {
        "value": false
    },
    "ShipmentDate": {
        "value": "2019-07-17T00:00:00-04:00"
    },
    "ShipmentNbr": {
        "value": "036971"
    },
    "ShippedQty": {
        "value": 1
    },
    "ShippedVolume": {
        "value": 0
    },
    "ShippedWeight": {
        "value": 0
    },
    "ShippingSettings": {
        "ShipToAddress": {
            "Country": {
                "value": "US"
            }
        },
        "ShipToAddressOverride": {
            "value": false
        },
        "ShipToContact": {
            "BusinessName": {
                "value": "CVS HEALTH"
            }
        },
        "ShipToContactOverride": {
            "value": false
        }
    },
    "ShippingTerms": {
        "value": "3RD PARTY"
    },
    "Type": {
        "value": "Shipment"
    },
    "WarehouseID": {
        "value": "002"
    }
}

我首先尝试将所有这些都放入一个API调用中以一次全部插入，但这产生了一些奇怪的序列错误，所以我尝试这种方式是因为过去我也必须这样做另一个端点。如何获取更新而不是插入更新？