com.microsoft.windowsazure.mobileservices.MobileServiceException：{'代码'：400}

Question

here is the picture of the code and error occured 请为我提供帮助，发生天蓝色异常的数据插入如下

java.util.concurrent.ExecutionException：

com.microsoft.windowsazure.mobileservices.MobileServiceException：{'代码'：400}