extensionElement provides metadata descriptions from metadata dictionaries and schemas outside of PBCore.
Best practice: These extensions fulfill the metadata requirements for communities identifying and describing their own types of media with specialized, custom terminologies.
extensionElement can only be contained by the element extensionWrap.
Usage: required within extensionWrap, not repeatable.
extensionElement has no attributes.
extensionElement contains no subelements.
Submit any issues or suggested changes for future schema iterations by creating a ticket in our Github repository.