1) (1 point) In this exercise, you created a sales order using a customer material information record created earlier in this tutorial. In which exercise did you create the customer material information record? 2) (1 point) You created sales orders in exercises SD14, SD21 and SD22. In SD14 and SD21, you were instructed to look at the availability of materials being ordered. Although you were not directly told to in SD22, know that SAP automatically checks the availability, and would notify you if there was not sufficient materials for the sales order. Checking material availability is one of two important checks during the sales order process. What other check should be made during the sales order process? Explain why, including the application control that could be implemented for such a check. 3) {1 point) What transaction-related control objective is most enhanced by this other check? Explain