Deleting a Sales order (SO) will remove it from the SO list and eliminate the Committed quantities of products from the inventory list.
To delete a Sales order:
Go to the Sell screen, find the SO you want to delete, and open it.
Click on the 3-dots at the top corner of the SO card and select Delete from the dropdown menu.
Click Yes in the popup window to confirm the deletion.
Note: Deleting Delivered Sales orders will increase the In stock quantity for the relevant products in the inventory list as the previously sold products are added back.