When a new customer, who does not have a Master Data profile, signs in with an access key through email, clicking on My Orders, for example, and trying to add some product to the cart, receives an error.

1. Access the store without being logged in.
2. Click on My Orders.
3. Choose the option to receive the access key by email.
4. Try to add a product to the cart.

There is currently no workaround for this scenario.