金蝶里凭证号是什么，可以设置吗

WebAPI + json方式保存会返回一个Number，这个Number是唯一的，金蝶里显示的这个凭证号是什么，可以设置成和返回的Number一样，或者设置成指定值吗，json串如下
{"Creator":"李","NeedUpDateFields":[],"Model":{"FVOUCHERID":0,"FAccountBookID":{"FNumber":"004"},"FDate":"2016-11-01","FSystemID":{"FNumber":"gl"},"FVOUCHERGROUPID":{"FNumber":"PRE001"},"GL_VOUCHER__FEntity":[{"FEXPLANATION":"库存盘点（库存申请调整)","FACCOUNTID":{"FNumber":"6602.37"},"FDEBIT":"0.670000"},{"FEXPLANATION":"库存盘点（库存申请调整)","FACCOUNTID":{"FNumber":"1901.01"},"FCREDIT":"0.670000"}]}}