1. Prepare equipment: The merchant needs to prepare a device that can scan the QR code, such as a mobile phone or tablet.

2. Download Tik Tok merchant management tools: download and install Tik Tok merchant management tools in the application market.

3. Open the write-off function: open the Tik Tok merchant management tool, find "Write-off" or similar options in the main interface, and click to enter the write-off page.

4. Scan the QR code: use the device to start the photo function and scan the QR code of the group purchase coupon provided by the consumer. The system will automatically identify and display relevant information.

5. Confirm the verification information: carefully confirm whether the consumer's information is correct, and ensure that it is a group purchase coupon within the validity period and is available.

6. View records: you need to view the written-off records. You can find the corresponding options in the Tik Tok merchant management tool and browse the list of completed records.