Check Funds on PO returns DO_ACTION-027: ORA-01403: no data found

We are on release 12.1.3 using encumbrance accounting and budgetary control.  The budgetary control is set at advisory.  For and existing Complex PO, that has 2 lines, we cancelled 1 of the lines and created a new line.  When we check funds it returns the error message "DO_ACTION-027: ORA-01403: no data found".  The current status of the PO is Needs Reapprove, Reserved.  Since it is a Complex PO, I cannot access it through the forms, only through Buyers Work Center(BWC).  In BWC, I do not have option to Unreserved it.