In Resaurant365, unique identifiers are important for numerous reasons.  To allow for the easy creation of unique records, many transactions have an Autonumbering feature that is managed under the Administration section of the Accounting Module.  When selected, the Autonumbering Next XX # (1) will be displayed next to the Prefix (if any) (2) as shown below.  To save any adjustments to the next number, or prefix, be sure to click the Submit button to the right of each Autonumbering line item.