Autodesk AutoCAD Design Suite 2013, Installation Manual, Page: 37 / 138

NOTE
When you enter the serial number and product key, if you make a mistake,
an X will appear next to the entry. If it's correct, a check appears.
The information you enter is permanently retained with the product. Because
you can't change this information later without uninstalling, take care when
entering the information. To review this product information later while the
product is running, on the InfoCenter toolbar, click the drop-down arrow
next to the Help button (the question mark). Then click About SketchBook
Designer.
NOTE
If you have lost your serial number or product key, contact the Autodesk
Business Center (ABC) at 800-538-6401 for assistance.
Locating Your Serial Number and Product Key
When you install SketchBook Designer, you are prompted for your serial
number and product key in the Licensing page, or the option of installing the
product in trial mode. You may enter your product information at any time
during your trial mode period if you opt to install the product in that mode.
The serial number and product key are located on the outside of the product
packaging, or in the Autodesk Upgrade and Licensing Information email. Make
sure to have these available before you install the program so that you don't
have to stop in the middle of the installation.
The serial number must contain a three-digit prefix followed by an eight-digit
number. The product key consists of five characters.
SketchBook Designer FAQ | 31