I was asked today "where is the list of mandatory elements in UBL?".  Perhaps the answer will help others.

There can be no such list of mandatory elements in UBL.  One cannot simply scrape the UBL document models looking for BIEs that have a minimum cardinality of one.  Determining the list of mandatory elements is an iterative process.

Read more

An essay regarding the Canadian and US approaches towards building government electronic invoicing, in comparison to the European approach:

On Google+

http://plus.google.com/+GKenHolman-Crane/posts/2AT1WNfi7Cz

On LinkedIn

Read more