I know that when you open an Invoice in Receivables - Billing - Manage Transaction and click on the button Actions and then Credit Transaction you can generate a credit memo that is linked with the invoice.
Since the client we are customizing for need this but with a lot of invoices the solution presented is using the AutoInvoice Template. The question is, how do we link the CM and Invoice in this template? Which field need to be filled? or is it necessary to fill out other sheet from the spreadsheet?