The Network Device Enrollment Service received an http message without the "Operation" tag, or with an invalid "Operation" tag.
这个不影响Afaria政策工作，safely ignore it.
参考：http://solveissue.com/note?id=1966692版权声明：本文为博主原创文章，未经博主允许不得转载。
Afaira服务器上报错NDEF invalid "Operation" tag
原文：http://blog.csdn.net/berryreload/article/details/49359631