If you have been using TableCheck for some time, you may have some duplicate customer profiles on the system.
In order to track visit history, customer preferences etc. accurately, it's always advised to merge possible duplicate profiles into a single profile for each guest.
Finding Duplicate Customer Profiles
To find if you have any duplicate customer profiles, go to Customers and click Find Customer Dupes
Merging Duplicate Customer Profiles
Click Merge for the set of records that you want to merge
For the fields displayed in red, select one of the values displayed on the right & left sides. (Nothing needs to be done for the fields that are not in red)
The selected values will then become green and will also be inserted into the fields.
Finally click Merge to complete the merge.