If you're working or planning to work on Sitecore Commerce, you will definitely run into this issue while working on the checkout process and to be specific in the forms entry steps, either the shipping/delivery step or the payment step, if you have the OOTB SXA storefront you would notice that the validation/error messages not working as expected, when you click the submit button you should receive/see error messages for the required fields, but this is not happening, want to know how to resolve this, keep reading the solution is simple!