This article is only relevant for customers who are using WorldPay (Vantiv) as their credit card processor.
If your customers are getting a "token error" message when they submit their orders on the checkout page, it's possible that WorldPay didn't set up your account properly. In order for customers to be able to save cards on their accounts and use them across all of your locations, each WorldPay merchant account has to be set up under a single token group. If they haven't been set up this way, then your customers will encounter this error if they try to use a saved credit card at more than one location.
If this happens, please reach out to WorldPay support to rectify the issue for you. You'll want to ask them to make sure all of your merchant accounts are linked within a single token group.