Various reports quoted Saugata Roy, parliament panel member, saying Patel was unable to tell when system will be back to normal.
Roy said RBI was on defensive mode on demonetisation debate.
Meanwhile, Rs 9.2 lakh crore were introduced in new currency so far.
The value of high denomination notes of Rs 500 and Rs 1,000 demonetised on November 8 was estimated to be Rs 15.44 lakh crore.
Patel briefed a Standing Committee on Finance panel about
He is also scheduled to appear before the