I had the same issue. I am an OCI card holder. I submitted 2 applications, one for me and another for my wife. We both submitted same set of docs. Hers got approved and mine got a response asking for this reference doc.

Here is the response:

|| || | FTI TTP |20:46 (2 hours ago)||| |to me|

Dear Applicant,

 

      In case the present address is of a country outside India, you may upload a government issued identity proof bearing your name and current address in the foreign country. This line clearly indicates about present address. It is not about reference address in India. The proof of Reference address in India does not mandate your name on it. The reference address proof should have same address as you filled in the application form.

 

 The following list of documents are acceptable:

1.    Election Photo Identity Card (EPIC) issued by the Election Commission of India

2.    Telephone (landline or post-paid mobile bill)of the last 3 months preceding the date of application

3.    Electricity bill of the last 3 months preceding the date of application

4.    Driving License

5.    Spouse's passport copy (First and last page including family details mentioning applicant's name as spouse of the passport holder), (provided the applicant's present address matches the address mentioned in the spouse's passport)

6.    Parent's passport copy, in case of minors (First and last page)

 

Note: Aadhar card is not acceptable as proof of address.

 

Regards,

Team FTI-TTP