User Exit or BADI for Alert message when creating first sales invoice to customer
Can it be done by User exit or BADI for give the alert message when creating first sales invoice(VF01) to corresponding customer? If possible, then can you specify the name for the enchancement?. That is, while saving the invoice it should check that whether this is the first invoice for the respective customer. If yes then it need to display the alert message. Kindly give the ideas if you already experienced this. Many thanks in advance.