Your customers may encounter an Table Not Found error if the Table for which you have generated the QR Code is not marked as Active. To prevent this error from reoccurring, you can navigate to Home > Setup > Store Management, expand the Tables accordion and flip ON the Active switch.
Click HERE to know more.
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QR Ordering
Flip ON this switch to generate a unique QR code containing
The Landing Page URL
The Table information (Number and Location)
The Store outlet it is mapped to.
Make sure that the table for which you are generating the QR is Active.