调用WebApi物料保存报错

[
"BD_MATERIAL",
{
"Creator": "BAH",
"NeedUpDateFields": [
"FID",
"FNumber",
"FMnemonicCode"
],
"Model": {
"FMATERIALID": 0,
"FNumber": "000141230301129017",
"FName": "CMU128,STRIP BUTTON,PC,GEN+SIL",
"FMnemonicCode": "141230301129017",
"FMaterialSRC": "A",
"FGEModifyDate": "\/Date(1459999737455+0800)\/",
"FGEModifierId": "Administrator",
"BD_MATERIAL__SubHeadEntity": {
"FSAPTYPEID": {
"FNumber": "ROH",
"FName": "ROH"
},
"FSAPUNITID": {
"FNumber": "EA",
"FName": "EA"
},
"FCategoryID": {
"FNumber": "CHLB01_SYS"
},
"FBaseUnitId": {
"FNumber": "Pcs"
},
"FErpClsID": "1"
}
}
}
]

明明FName 是有值的，求大神解决，在线等……