Mistake in Return for the period April 2018

Tanay Choksi (Student) (112 Points)

27 September 2020  

Sir,

I have committed mistake while filing return of April 2018. While preparing the return in my software I have taken correct figures. I have Json file for that period and it shows correct figures of ITC claimed. However while uploading the return the portal is showing that ITC claimed in return as zero. Now this error has not been corrected till date. How can I claim the ITC of April 2018 in FY 2020-21. I have replied to helpdesk but they are saying that no such record exists in their database. 

Request to provide solution to the above issue. The only evidence available with me is the json file prepared from my software. It is a genuine mistake. 

Kindly help