Is the authorized per diem amount stored in a table

I see that the exception comment for per diem overages is stored in the EX_SHEET_LINE table field EX_LOCAMT_COMMENT.  Is the authorized per diem amount that is calculated and populated on the pop up page stored in a table?   Running a Peoplecode trace it does not appear to be stored in a table.  I've been asked to populate the value on the expense report, but because it is calculated value as EX_LINE_WRK.AUTHORIZED_AMT, it is not available when printing the expense report via the application engine.