解决webapi保存生产入库单时遇到“物料编码”是必填项问题

背景：webapi保存生产入库单，产品类型为主产品（手工新增联副产品没问题）

1、构建生产入库单保存的json数据如：

{

"Creator": "",

"NeedUpDateFields": [],

"NeedReturnFields": [],

"IsDeleteEntry": "true",

"SubSystemId": "",

"IsVerifyBaseDataField": "false",

"IsEntryBatchFill": "true",

"ValidateFlag": "true",

"NumberSearch": "true",

"InterationFlags": "",

"IsAutoSubmitAndAudit": "false",

"Model": {

"FID": 0,

"FBillType": {

"FNUMBER": "SCRKD02_SYS"

},

"FDate": "2019-02-28 00:00:00",

"FStockOrgId": {

"FNumber": "100"

},

"FPrdOrgId": {

"FNumber": "100"

},

"FOwnerId0": {

"FNumber": "100"

},

"FOwnerTypeId0": "BD_OwnerOrg",

"FIsEntrust": false,

"FEntity": [{

"FIsNew": true,

"FMaterialId": {

"FNumber": "3601002"

},

"FCheckProduct": false,

"FInStockType": "1",

"FProductType": "1",

"FUnitID": {

"FNumber": "Pcs"

},

"FMustQty": 100.0,

"FRealQty": 100.0,

"FBaseUnitId": {

"FNumber": "Pcs"

},

"FBaseMustQty": 100.0,

"FBaseRealQty": 100.0,

"FOwnerTypeId": "BD_OwnerOrg",

"FStockId": {

"FNumber": "CK001"

},

"FISBACKFLUSH": false,

"FWorkShopId1": {

"FNumber": "BM000001"

},

"FMoBillNo": "MO2019.02.20000211",

"FMoId": 110296,

"FMoEntryId": 110342,

"FMoEntrySeq": 1,

"FStockUnitId": {

"FNumber": "Pcs"

},

"FOwnerId": {

"F