A practical workflow
Print a small proof
Use the actual intended size, material and placement. A QR that works on a bright monitor may be harder to scan on glossy paper.
Scan on two phones
Try ordinary camera apps at a realistic distance. Confirm that the page is readable and that the correct business appears.
Follow the destination
Check the draft approval and Google handoff with sample input. Stop before posting any invented review to a live listing.
Avoid this mistake
Do not rely only on scanning the downloadable QR image at full size on a laptop.
What to check
Record successful scans, the page reached and any confusion at the copy-and-continue step.
A practical first check
Open the customer page as someone who has never seen your settings. They should recognise the business, understand the invitation and know what happens after copying a draft. Test with sample text and stop before posting to a live listing. The purpose is to find friction, not to create artificial customer evidence.