Return filled wrongly

You either write to AO and tell them the true facts or file rectification request by uploading revised XML by selecting "No" in 94A.

In the rectification type   

You have to select "assese data correction type"  

In the reasons mention "94A not applicable to you". 

Generate X M L and upload.  But since you have received letter from AO. Most probably you need to reply to them.