A new update for Pokémon Tretta Lab for Nintendo 3DS is now available on the Japanese eShop. The Version 1.1 patch fixes some scanning accuracy issues.
Version 1.1 QR Code - Update Procedure
Instructions
QR Code
1. Turn on the camera by pressing the button (R or) L in the "HOME MENU".
2. Touch the two-dimensional code reader at the bottom left of the screen.
3. To read the QR code, use the camera and line up the code.