The module doesn't validate the required field (radio button type) on my checkout page and guests can checkout without filling this field.

The error also happens on your demo site, please have a look:

Note that we use the latest version - v1.2.6 and M2.4.2.
Please give us a guide to fix it.


To fix this error, please edit the fileapp/code/Bss/CheckoutCustomField/view/frontend/web/js/model/checkout-custom-field-validator.js as below:

If you need further assistance, please do not hesitate to contact us. We'd be happy to support!