Hi Ashok,
I agree with Brian that correcting an incorrect opening balance really depends on the state of where things are, and having an experienced Adagio consultant alongside would be invaluable.
There are a few short training videos on the Softrak website, and one is devoted to
creating new banks in Adagio BankRec, which includes the suggestion Brian gave to make the opening balance 0.00 and determine the current balance during your first bank reconciliation with BankRec.