Reversal documents are used to cancel documents that have been poorly launched, that is, if we issue a debt note and for some reason we are mistaken, as can be the case if we choose the wrong entity, so that we can cancel the document, but keep the documentary history, we must issue the same document but in reverse. Then the 2 documents will appear in the current account, so that we can select them at 2 and, when saving the reversal document, cancels the normal document.