Each catalogue on the network can only syndicate another catalogues content if they agree to adhere to the license conditions for a particular metadata record. There needs to be an overarching license that allows each catalogue to “agree” to abide by the licensing terms for a metadata record from another catalogue.
Example: how do we federate SNOMED CT where each website publishing SNOMED CT is expected to ask the users to agree to the licensing conditions of SNOMED CT before accessing the content? We need to investigate this use case in more detail. Potentially every catalogue will need to implicitly agree that they will abide by the licensing conditions for each dataset i.e. if catalogue 1 syndicates SNOMED CT from catalogue 2, and catalogue 2 must get a user “acceptance” of the Snomed CT license conditions, then catalogue 1 must do the same.