http://ris.cesni.eu/_assets/ERI-ERINOT/1.3/ is referred
to as "the ERINOT Namespace Edition 1.3".
The namespace doesn't contain any release of the message yet.
The ERINOT 1.3 is about to be released in June 2021, but you can refer to the github repository below to check progress.
ERINOT_xsd github repository
The XSD schema generates a form that can be previewed for trial purposes: form ERINOT 1.3
CESNI ERI webpage