On the Manual Control Request (MAC) page, you must first retrieve the page and then select the “Delete” 
icon. A pop-up message “Are you sure you want to delete?” will be displayed. By selecting the “Yes” button, the MAC request will be deleted.
You will be returned to the MAC page with a message, “Request Accepted. Transmission to SCPs is in progress. Email will be sent once response is received from SCPs. (418008)” at the top of the page.
For more information on the MAC fields, their descriptions and their valid values, please click here.