Duty correction in are-1

get in touc h with any consultant with all documents, as major portions are missing in query

1) its cleared under UT or bond and CT-1

2) it was his manufacturing export or exporter through mercant exporter.

3) and most vital part,  while filing the return of the specific period it must have displayed the error.

so on partial information its hard to say something,  visit any nearby consultant of the indirect tases, they can examine the docuemnts and can guide better.