Bailiff ID is either the ID of your PC or an NPC you have appointed to the position, or "Auto Mode" to indicate Auto-Bailiff is functioning. If there is no bailiff you need to find and install GOOD bailiffs as quickly as possible. A good bailiff can have a huge impact on how quickly you can increase taxes, how well your monies are spent or invested, and how fast those walls go up around the new keeps, etc. When choosing bailiffs, remember that language* differences between your fief and the bailiff can cause problems and lower your income.