In this window, you select lines from posted sales documents that you would like to copy to your current document to ensure that the cost of the original document is exactly reversed in the new document.
On the left-hand side of the window are links to the various types of posted documents from which you can copy lines, such as posted shipments or posted invoices. When you click one of these links, the lines that are available for copying appear.
If you want to see only lines from posted shipments or invoices with quantities that have not yet been reversed or returned, place a check mark in the Show Reversible Lines Only field.