GfK is a worldwide leader in market intelligence and these settings control how it can be linked to your EQ system to send data about your purchases. Retailers are required to enrol with GfK directly.
Click: System Config > Optional Modules > GfK Data Collection
Input your branch ID and channel number to enable data collection with the GfK scheme.
Enter your account details and press 
Update to save and close.
For more information contact GfK directly on 0870 603 8264.