Are you certain about non-empty? In the XML sense, this means that either Type or IdentifierName must be present, but neither @Root nor @Extension.
TR0242 clarification
TR1500: Intended restriction?
TR0242 clarification
TR1500: Intended restriction?
R5003 out of context
Second round of changes: https://github.com/ornet-ev/biceps/pull/327
Also needed: Change SequenceId/InstanceId/... definition as specified in 1.1.2.1. Change, 1.1.3.1. Change, 1.1.5.1. Change and 2.3.1.1. Removal.