Client code is in credit but still the amount is not reversed in 1200 and the code is not removed from square off. How the reversal is carried in such a situation?

The above situation arises only if the client code is shifted to another BA where his 1200 code is changed. To do reversal in this case the client first has to clear the debit by keeping the old sub broker code. This debit clearance must be intimated via mail to CSE; only then reversal is carried.