Open akuckartz opened 9 years ago
The main issue is that the publication date is not necessarily known and therefore can not be required.
A date range in which the publication took place is usually known.
Resolution: Do not require this property.
Using a date interval or a circa
value might be an option in the future, see https://github.com/schemaorg/schemaorg/issues/242
As suggested in https://github.com/OParl/specs/pull/265