Oracle R12 AR: Mexico: How to generate the Credit Memo for Anticipation Discount (Payment Terms)?

According to Mexico law, the discounts given when the customer pays before the due date (discounts defined at the payment term) need to be handled with a Credit Memo. This Credit Memo must be sent to SAT for validation. Oracle standard feature can calculate the discount but doesn’t generate the Credit Memo. How to generate the Credit Memo?

Thank you.