User created a duplicate vendor bill and the same bill number is needed for a different vendor now. What can be done to resolve this?
To avoid this issue in the future, the option for allowing duplicates should be turned off in the Vendor Bills panel in Settings > Add-ons > Accounting. As a workaround for the existing vendor bills, you can manually enter the initials of each vendor along with the bill number for their respective bills. For example, AB-85 and DE-85 for the two vendors. This ensures that the bills remain unique, despite having the same number.