<!-- Please complete the template below as best as you can. Make sure to check if this issue has already been raised by someone else first to avoid duplication. For each section below, please add screenshots or links or anything that may help visual learners understand the problem better, even if this takes you an extra minute or two this is a great help to some folks. https://www.learning-styles-online.com/style/visual-spatial/ --> ### Problem The customer is allowed to complete their account details page with free form text in the postal code form:  When they try to make a purchase, they get an error about their state, but I believe the problem is actually about the postal code they've provided:  Reported example: https://gitlab.zendesk.com/agent/tickets/151819 ### Proposal Enforce standards when they create their account so that the system doesn't present an error when they are trying to make a purchase.