web api json凭证接口提示不合法

我的借方不带辅助核算，我的贷方带有辅助核算。为什么借方的老提示错误，如图，麻烦帮我看下json。
"{
\"Creator\": \"user\",
\"NeedUpDateFields\": [

],
\"Model\": {
\"FAccountBookID\": {
\"FNumber\": \"001\"
},
\"FACCBOOKORGID\": {
\"FNUMBER\": \"001\"
},
\"FDate\": \"2016-05-22\",
\"FVOUCHERGROUPID\": {
\"FNUMBER\": \"PRE001\"
},
\"FVOUCHERID\": 0,
\"FBASECURRENCYID\": {
\"FNUMBER\": \"PRE001\"
},
\"FISADJUSTVOUCHER\": false,
\"FCashierRecheck\": false,
\"FCancleRecheck\": false,
\"FIsQty\": false,
\"FATTACHMENTS\": 0,
\"FADJUSTPERIOD\": 0,
\"FDEBITTOTAL\": 139.0,
\"FYEAR\": 2016,
\"FCREDITTOTAL\": 139.0,
\"FPERIOD\": 5,
\"GL_VOUCHER__FEntity\": [
{
\"FEXPLANATION\": \"借方摘要\",
\"FACCOUNTID\": {
\"FNUMBER\": \": 1001.01\"
},
\"FCURRENCYID\": {
\"FNUMBER\": \"PRE001\"
},
\"FEXCHANGERATETYPE\": {
\"FNUMBER\": \"HLTX01_SYS\"
},
\"FEXCHANGERATE\": 1.0,
\"FAMOUNTFOR\": 139.0,
\"FAmount\": 139.0,
\"FDEBIT\": 139.0,
\"FDC\": \"1\"
},
{
\"FEXPLANATION\": \"贷方摘要\",
\"FACCOUNTID\": {
\"FNUMBER\": \"2203.02\"
},
\"FDetailID\": 100096,
\"FCURRENCYID\": {
\"FNUMBER\": \"PRE001\"
},
\"FEXCHANGERATETYPE\": {
\"FNUMBER\": \"HLTX01_SYS\"
},
\"FEXCHANGERATE\": 1.0,
\"FAMOUNTFOR\": 139.0,
\"FAmount\": 139.0,
\"FCREDIT\": 139.0,
\"FISMULTICOLLECT\": true,
\"FCASHFLOWITEM\": false,
\"FDC\": -1
}
]
}
}"