FYI - We submitted a Microsoft support ticket on this, as it's actually a legal requirement compliance issue. We were told that the only way (using Standard functionaliy) was to use security roles to show/hide the Federal Tax ID field on the Vendor. However, that field may contain an SSN or EITN, or - just a standard EIN. It is neither necessary nor required to hide if the number is an EIN.

This puts undue burdon on the customer to either hide the field entirely to all but only a few roles, or - to perform a custom modification to hide or mask the Federal Tax ID field (only) when the Tax ID Type is SSN or EITN.

Microsoft should make this a standard parameter-based option in configs, so that the Federal Tax ID number will be masked (***-**-1234) when Tax ID Type = SSN or EITN.