1. In OIS300, find the CO number, if the order status is 66 then right click to open Delivery Toolbox.

2. In MWS410, right click delivery line, select picking lists.

3. In MWS420, right click the picking list, select Correct Picking.

4. In MMS428, go Actions select Reverse all.

5. CO would changed to status 22 when picking list reversed.

6. In OIS300, right click the order and select Delete. Order status changed to 90. 

7. Confirmed Close, the order would change to status 99 Cancelled.