This means that, if you have your own code that looks up an order's VAT number, you will have to use $order->vat_number rather than $order->data['vat_number'].
In version 6.x-2.x of this module, the broken "Have to fill in VAT" permission has been replaced by a configuration setting in /admin/store/settings/vat-number
Please make sure that, after running the Upgrade procedure, the roles ticked there reflect what you want.
In version 6.x-2.x of this module, the broken "Have to fill in VAT" permission has been replaced by a configuration setting in /admin/store/settings/vat-number
Please make sure that, after running the Upgrade procedure, the roles ticked there reflect what you want.