Payment Application Detail by Working is lower than Payment Application Analysis

Assuming both reports were run for the same date range and both include the same transaction types, the typical cause of this is an invalid Originating or Project Attorney on a Matter for which a Payment was received.  You can compare the two reports to find the Matter that may be causing the issue.  Once you have found the Matter, check that there is a valid Originating and/or Project Attorney assigned.  You can also go into the File Maintenance Matter Manager and sort by Originating or Project and check that there are no blanks besides the blanks because of the Matters in Intake.