You use this function to cancel the last action that you performed in Microsoft Dynamics NAV.
You can use this function by clicking Edit, Undo on the menu bar.
If you make an editing error in Microsoft Dynamics NAV, you can "undo" it. For example, if you happen to delete the contents of a field, you can recreate them by using this function. You can undo only the preceding action, so it is always your latest action that will be undone.
Leaving a field also counts as an editing "action," so if you want to undo a change in a field, you must choose Edit, Undo before you leave the field.
In an accounting and business management program, there are many things that cannot be undone - for example, entries cannot be unposted and invoices cannot be uncreated. It would be illegal for the application to allow you to do these things. If you make a mistake in an entry, you must solve the problem by creating a reversing entry for the same amount and then make the correct entry afterwards. If you create an incorrect invoice number, you must let the invoice remain empty and create the new, correct one. The last type of error will rarely occur, because the system automatically suggests the invoice number.
Microsoft Dynamics NAV has two functions that can help you correct erroneous entries made while posting from a journal; the Reverse function, and when applying customer or vendor ledger entries; the Unapply function.