Error 104 means the action you requested is not available for that platform in this situation. You may see “This feature isn't available for this platform” or the earlier wording, “Feature not available for a platform.”
It can affect one action, one type of content, or a playlist above a certain size. It does not mean the entire service is unsupported.
Removing duplicates on YouTube or YouTube Music
Removing duplicates on YouTube or YouTube Music may be unavailable for some playlists, depending on their size and the service's current restrictions. These restrictions can change. Error 104 for duplicate removal does not, by itself, mean you cannot transfer the playlist.
For the steps, see How to Remove Duplicate Songs from a Playlist. If you get 104, include the playlist link and track count when contacting us. Do not delete the original playlist to troubleshoot the error.
Other actions that can return 104
These are examples of current restrictions in Soundiiz, not a complete list.
Sorting playlists is not available through Soundiiz for YouTube or YouTube Music. Apple Music playlists cannot be sorted through Soundiiz either.
On Amazon Music, some actions also depend on your Amazon Music subscription. For example, removing duplicates or adding favorite tracks can return 104 with an Amazon Music Free account. This is separate from your Soundiiz subscription.
What to do next
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Check the destination and content type
Use the compatibility table to check what the service can receive. Support for playlists does not imply support for favorite albums or every playlist-editing action. -
Complete an unsupported edit in the music service's app
For example, rename or delete an Apple Music playlist in Apple Music. An action can work there without being available through Soundiiz. -
For a Sync, check whether you need to replace tracks
Replace tracks requires permission to remove existing tracks. If the destination supports additions but not removals, Add tracks may suit your needs. It keeps the destination's existing tracks; it does not make the two playlists identical. See how playlist synchronization works.
Frequently Asked Questions
Why does the compatibility table show read and write support?
Read and write support describes whether a service can send and receive that type of content. It does not cover every action. For example, Apple Music accepts new playlists through Soundiiz but does not allow them to be renamed or deleted through Soundiiz.
The action works in the music service's app. Is Soundiiz broken?
Not necessarily. A service can offer an action in its own app without allowing connected apps to perform it. If you are unsure whether your action is supported, send us the service name and the exact action you tried.
Should I wait and retry error 104?
Waiting does not usually resolve an unsupported action. Error 104 is different from error 105, which indicates a temporary restriction. Support for an action can change over time, but there is no guaranteed date.