DDEX ERN (Electronic Release Notification) is the international standard format for delivering music metadata from distributors to streaming platforms and stores. Understanding ERN is essential for labels and distributors who need to ensure their releases are ingested correctly by DSPs with accurate metadata.
What DDEX ERN is
DDEX ERN (Electronic Release Notification) is a standardised XML message format created by DDEX (Digital Data Exchange) for communicating information about music releases from distributors to digital service providers (DSPs). When a distributor delivers a release to Spotify, Apple Music, Amazon Music, or any other major DSP, the release metadata (title, artist, track listing, ISRC, label, copyright year, genre, and dozens of other fields) is communicated in a DDEX ERN message. The DSP's ingestion system reads the ERN message and creates or updates the release record in its database.
Why ERN matters for labels and distributors
ERN matters because it is the standard the major DSPs use to receive and process music. A distributor delivering music in a non-DDEX-compliant format is relying on the DSP to interpret and reformat the data — which introduces errors. A DDEX ERN-compliant delivery gives the DSP exactly what it expects, in the format its ingestion system is designed to read. The result is fewer errors, faster ingestion, more accurate metadata in the DSP catalogue, and ultimately better royalty attribution because the data that platforms report back to collecting societies is based on what was delivered to them.
ERN message structure
An ERN message is an XML document containing several key blocks:
- MessageHeader: sender and recipient information, message creation date, and message ID.
- ResourceList: detailed information about each audio file in the release, including ISRC, title, artists, contributors (songwriter, producer, mixing engineer), duration, and technical file specifications.
- ReleaseList: information about the release as a whole — album or single, UPC, label, copyright, original release date, and the list of resources (tracks) included.
- DealList: commercial terms — the territories where the release is available, the distribution channels (streaming, download, subscription), and any retail pricing or availability restrictions.
ERN versions
DDEX publishes ERN as a versioned standard. Current major versions in use are ERN 3.8 (older standard, still widely supported) and ERN 4.1, 4.2, and 4.3 (progressively newer standards with expanded metadata fields and improved support for modern distribution models). Some DSPs require specific ERN versions. Spotify and Apple Music support ERN 4.x; older implementations may still accept ERN 3.8. See our dedicated guide on DDEX ERN 4.3 for the latest changes.
Consumer distributors vs DDEX-compliant distributors
Most consumer-facing distributors (DistroKid, TuneCore, CD Baby) do not deliver in full DDEX ERN format. They use their own proprietary formats or simplified metadata schemas for DSP delivery. This works for individual artists, but introduces more variability in metadata quality. Professional B2B distributors like AudioSalad deliver in DDEX ERN, which means the metadata arriving at DSPs is more structured, more complete, and less prone to ingestion errors. For labels managing large catalogues where metadata quality directly affects royalty accuracy, DDEX ERN compliance is a meaningful differentiator.
Code Group Music delivers releases via DDEX-compliant infrastructure. If you are concerned about metadata quality in your catalogue's delivery to DSPs, a catalog assessment will identify current issues. Start at codegroupmusic.co.uk/#catalog-assessment.
Frequently Asked Questions
Do I need to understand DDEX ERN as an individual artist?
Not in detail. Individual artists using consumer distributors do not interact directly with DDEX ERN — the distributor handles this layer. DDEX ERN understanding becomes relevant for labels with large catalogues, label services companies, or technical teams managing music delivery infrastructure.
What version of ERN should I use?
The most current stable version is ERN 4.3. However, the correct version depends on which DSPs you are delivering to and what your delivery infrastructure supports. Most major DSPs accept ERN 4.1 and above. Check with each DSP's technical requirements documentation for the versions they accept.
What is the difference between DDEX ERN and DDEX MEAD?
DDEX ERN (Electronic Release Notification) is for delivering new releases to DSPs. DDEX MEAD (Metadata for Audio Delivery) is a related standard for delivering detailed audio and metadata to sound recording databases. They serve different purposes in the music data supply chain.
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