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Allow me to explain how this feature works.
By design, the system will always use the next number from the last used check number. There's no option to turn this off, but you do have the option to edit it whenever you create a new check.
To avoid duplicate check numbers, please make sure that the warning feature of using the same check number is enabled. This way you can re-use previous check numbers.
Let us know how it goes by leaving a comment below. We're always here to help.
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