@surfer ADL2 templates are not supported in EHRbase. Yes there is a stub API implementation, but it’s only the definitions.
There are advanced discussions in the Specification Group for a post-ADL2 templates specification that would align ADL1.4 and ADL2 and facilitate transition from either version to the newest one.
Because of this, there are no plans to implement ADL2 in EHRbase, but rather wait for the new specification and evaluate then what makes most sense to support.