I'm trying to apply for Z-VISA of China in Mumbai, India.
As a part of documentation requirements for Z-Visa, the following documents are arranged.

From my china office:
1. Visa Notification issued by China government duly stamped (Original)
2. Working Card (Green) - Original

I have applied with the above two documents along with the documents like Physical examination record, eductional ceritifacates, Application Form, Photos, Covering letter, passport copy & original.

Even after the above documents, VFS - Mumbai , India is demanding for Allien Employment License.
I have working card - Green in Original. is it sufficient or only Allien Employment License is required for Z-Visa.

If Working card is acceptable, Please suggest how to convense VFS- Mumbai & China Consulate-Mumbai. Can any one give me the clue or any supporting document.

Thanks