Hi Christine,
You have installed Adagio Ledger 9.1A, which has an optional feature for auto-filling either the account number or the department number with some character, for the purposes of easier locating codes fro the finder. I suspect that in your case, Adagio Ledger was configured with a period to trail the department number, and it was defined where the department code length is 2 characters longer than you actually use.
The solution is to open Ledger and the company profile, and either ensure that the department code length for auto-fill is set to the actual number of digits you use for departments, or disable the auto-fill feature for departments entirely.
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Regards,
Softrak Tech Support