Hi, Sherry,

Are you saying that the Payments, Check Reconciliation menu option is greyed out? If so, check with your Adagio System Administrator as your user group doesn't have access to the function.

Or, are you saying that, within Check Reconciliation, if you double click on the item the radio button for the Reverse option itself is greyed out? If so, then there has already been an invoice or documents applied to the prepayment and it cannot be reversed now.