You can create a sales invoice reference number for credit note transactions of the company.
Click Accounts receivable> Common Forms> Sales Order Detailsto open the Sales orderform.
Press CTRL+N to create a new sales order, and enter the required details.
For more information, see the section "Sales orders (form)" in the Applications and Business Processes Help.
Click Posting> Invoiceto open the Posting invoiceform and post the invoice for the sales order transaction.