Your AP serial number can be found in a few different places:
Want more power? Flat 6 Motorsports provides custom pro tuning services for Cobb Accessport equipped Macans. The calibration has been configured to increase power while maintaining a conservative approach to tuning. Product Details The Flat 6 Motorsports Stage 1+ Map for the Macan S, GTS and Turbo provides additional power output compared to the Cobb OTS Stage 1 map. A V3 part number would start with 'SUB01', whereas a V2 serial number would start with 111.
For example, if you have a 2002 WRX, that is a SUB-001 part number. The first 3 digits will be the year/model of your car. If you're going through the AccessPort to find your V2 serial number, it will only give you the last 3-5 digits. If you have a V3, it will begin with FOR, SUB, MIT, MAZ, NIS, etc (depending on your car). You should find a 10 digit serial number there. C) In the 'About AccessPort' menu, scroll down to 'Serial Number Sticker'.