各位大师好，我们在调试付款单保存接口时，遇到以下问题，帮忙解决下：

接口反馈：CurrencyTest success:{"Result":{"ResponseStatus":{"ErrorCode":500,"IsSuccess":false,"Errors":[{"FieldName":"FPURPOSEID","Message":"单据体“付款单明细”第1行字段“付款用途”是必填项","DIndex":0}],"SuccessEntitys":[],"SuccessMessages":[],"MsgCode":0},"Id":"","Number":"","NeedReturnData":[{}]}}

但是我的我在代码中FPURPOSEID是传了值的："\"FPURPOSEID\": {\"FNumber\": \"SFKYT10_SYS\"}," ；而且怕传的值不对，我还查了T_CN_RECPAYPURPOSE_L和T_CN_RECPAYPURPOSE表，里面的[FPKID]和[FID]我都试着传给FPURPOSEID作为参数，但是还是不对，

还是上面的接口反馈提示，请大神帮忙解答下我的问题出在哪里？

代码如下：

public static void saveCurrency() throws Exception{

String K3CloudURL = "http://192.168.1.10:8002/";

String dbId = "5f167983a68982";

String uid = "administrator";

int lang = 2052;

ApiClient client = new ApiClient(K3CloudURL);

Boolean result = client.login(dbId, uid, pwd, lang);

if(result){

String sFormId = "AP_PAYBILL";

String sContent = "{" +

" \"Model\": {" +

" \"FDOCUMENTSTATUS\": \"C\"," +

" \"FCURRENCYID\": {" +

" \"FNumber\": \"PRE001\"" + //PRE001//1

" }," +

" \"FDATE\": \"2020-09-01\"," +

" \"FBillTypeID\": {" + //单据类型

" \"FNUMBER\": \"QTYFD02_SYS\"" + //QTYFD02_SYS//AP_PAYBILL

" }," +

" \"FCancelStatus\": \"A\"," + //作废状态

" \"FCONT

产品问题调试付款单保存接口时的问题

产品问题 调试付款单保存接口时的问题

恭喜您！

产品问题
调试付款单保存接口时的问题

产品问题调试付款单保存接口时的问题