FAQ #: 21
How do I determine when and how I got my General Ledger out of balance?
Next review the entries on this date for any obvious problems. If none are found, then run the G/L Account Activity Report again for just this one date with various source codes that were used that day. This allows determing by trial and error which source code caused you to become out of balance. Once the problem is narrowed down to specific date and source code, it is normally much easier to determine how to fix the out-of-balance situation.