To issue a Credit Notes to the CFDI to correct amount or cancel in Front perform the following steps:
Go to Reprint of Invoices and search for the applicable Room or Folio.

It is suggested to search by "Invoice Date".
In the Issued Accounts window, click on the EDIT icon of the room or multiple folio to which the Credit Note will be
issued.
In the Reprint Information window, enter the information in the following fields:
Field
| Description
|
Document Type
| Choose Credit Note
|
Type of Reference for CN or DN
| As appropriate, select:
Cancel: The total amount is considered to cancel or void CFDI.
Correct Amount: The amount indicated is considered.
|
Click on the Generate Electronic Invoice button.