discount 100% can make same effect as returned order

Now i need to apply one idea but i don’t know this is true or false

I have sales order already invoiced can i cancel it by adding discount 100% to make the cost 0 and as following it not have any

benefit or affects


Why to add 100%

Once you return the invoiced order effect will be nullified automatically.

thank you amol you told me about return order before and you are true.only this idea is true or false only need answer yes or No


How does that method correct the inventory?