Type: New Feature
Component/s: Naming and Design Rules (NDR)
A set of UBL 2.1 schemas with individually extensible ABIEs is found here:
In the "val/" directory you will find order-test-good.xml that has a custom extension at the line item level. Running "test.bat" or "sh test.sh" validates the document.
The "xsd/" and "xsdrt/" are as expected, except that the Aggregates fragment now allows <ext:UBLExtensions> on every ABIE.