eStore: How to enforce a valid selection on product variation by Tips and Tricks HQ Support Portal › Forums › WP eStore Forum › eStore: How to enforce a valid selection on product variation Tagged: product variation, variation control This topic has 11 replies, 3 voices, and was last updated 7 years, 5 months ago by admin. You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In