ubl-comment message

Subject: UBL invoice

From: "Jonas Jasas Jr." <jon@stekas.lt>
To: ubl-comment@lists.oasis-open.org
Date: Fri, 1 Feb 2008 16:48:42 +0200

Hello,

Is there an example of xml invoice with required tags?
I am new to xsd and can't  figure out how to see all required tags for
UBL invoice.

Thank You for your help!

Follow-Ups:
- Re: [ubl-comment] UBL invoice
  - From: jon.bosak@sun.com
- Re: [ubl-comment] UBL invoice (more...)
  - From: JAVEST <roberto@javest.com>