eMastered does not allow the same ISRC to be used across multiple accounts. This restriction exists for several reasons, including some outside eMastered's control.
However, eMastered offers a workaround—its “Splits” feature. This allows you to send all or part of the earnings from a specific track to another eMastered account.
If you’re transferring ownership of a song, you can use this feature to route 100% of the revenue to the new account while keeping the original ISRC and metadata intact. Your stats and playlist placements will also remain unaffected.
The "Splits," section can be found in your distributions settings tab: