RG2758 for Argentina E invoicing for vendor credit memo

Need help if the sap's E invoicing solution for Argentina's country specific solution RG2758 can be used for sending vendor credit memo for getting the CAE number from AFIP. The options given on the AEI export program / tcode are Billing and FI documents applicable for web service. Which option can be used for vendor credit memo or need to be enhanced for accounts payable credit memos?