ISRC_DUPLICATE Error Identifiers

Same ISRC on different titles in batch

One ISRC identifies one recording. A different recording, including a different version, gets its own ISRC; the same recording keeps its ISRC on every release.

Severity: Error
Field: isrc
Checks: Whole batch
Rule ID: ISRC_DUPLICATE

§ 01

How the checker tests it

Flags an ISRC that appears on rows with different titles or versions.

Fix. Assign a new ISRC to the different recording.

§ 02

Examples

This rule compares rows across a batch. Run it in the checker with the sample: rows 5 and 6 of the sample share a title.

§ 03

Sources

[1]International ISRC Registration Authority: When Not To Assign

Read the guide: ISRC and UPC Errors: Invalid, Duplicate and Reused Codes (and How to Fix Them)

§ 04

Cite this rule

Metadata Style Guidelines (2026). ISRC_DUPLICATE: Same ISRC on different titles in batch. https://www.metadatastyleguidelines.com/rules/isrc-duplicate

https://www.metadatastyleguidelines.com/rules/isrc-duplicate