7.3 For releases

The following common rules shall apply to all releases in all profiles defined in this part of the ERN standard:

1. Any main release intended for consumers shall be identified by either a GRid, ICPN or a ProprietaryId. Other identifiers may be provided in addition.

2. Track Releases shall be identified by either a GRid, ICPN or a ProprietaryId.

3. If a record company or distributor is considering the use of an ISRC as an identifier for a Track Release, it shall be communicated as a ProprietaryId.

4. Track Releases should be identified with an identifier unique to the content and the context (i.e. the main release it has been taken from). This can be achieved by, for instance, concatenating the ISRC identifying the Track Release's SoundRecording and the ICPN of the main release.

5. There needs to be a ReleaseLabelReference for each territory for which a deal is provided.

6. A CLine may be communicated where applicable. If a CLine is provided, the DSP shall ingest it.

7. At least one ReleaseDate or OriginalReleaseDate (the former is preferred) shall be provided for the release if the record company or distributor has the information available.

8. A ResourceGroup of type Side shall only be provided for releases that may (also) be available with a UseType of PurchaseAsPhysicalProduct.