After you’ve completed your month-end tasks, you should lock that period. This will prevent anyone from inadvertently creating, editing or deleting transactions in a period in which you don’t want transactions to be modified.
date. Image Added This places a temporary lock on the period up to and including the
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date you selected. If you need to create, edit or delete a transaction in a locked period at a later time—for example, you locked the period from March
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2018 and now want to create a transaction in February
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2018—you can unlock the period by deselecting the Lock my data up to and including option.