We are seeing this too

I'm getting this too, on 14.1 RC2. Errors flash-up in the Issue Navigator, then vanish, leaving you with a failed build and no clue as to why. These last couple of Xcode builds have been virtually unusable. Can someone at Apple PLEASE look at this urgently.

Thank you - requested details now added to FB11733455. Unfortunately I can't provide a sysdiagnose as we are unable to reproduce (it works fine in our dev & test environments). We will look in to implementing "Proactive Restore" - it looks like a much smoother process for our customers.

It’s the same app and same IAP. Catalyst allows you to do this.

Seems fixed in iPadOS 16 beta 10 (20B5056e)

Still broken in iPadOS 16 beta 9 (20B5050f)

I’ve created FB11529157 for this

I hit the exact same error (see here). By the way you might want to try adding the MusicKit tag to your post. So far for the WWDC22 enhancements to MusicKit I’m finding: Catalyst isn’t supported, period iPad is meant to be supported but doesn’t work iPhone kind-of works but good luck getting any help or support when you have questions I’m disappointed, to put it mildly.

Apologies if it's a bit obvious but probably the first thing to check is that you've actually granted permission for your app to access Apple Music on your Mac. i.e. in the System Preferences app, Security & Privacy -> Privacy -> Media & Apple Music. Is your app listed there and is access enabled? Just to confirm, this call is working Ok for me on Ventura (unlike any of the newer MusicKit functions).

Am going to answer my own question here for when others hit the same issue: according to both the documentation and my direct experience, these new MusicLibrary calls are NOT supported on macOS Ventura, either natively or via Catalyst. They are only supported on iOS-derived platforms. I find it deeply concerning that new APIs are being introduced which aren’t available on Catalyst in particular. It calls into question Apple’s commitment to the platform - I’m surprised this hasn’t received more publicity.

I've just noticed the detail text for the error is: "Conformance of 'Playlist' to 'MusicLibraryRequestable' has been explicitly marked unavailable here (MusicKit.Playlist)" Is the new MusicKit functionality not yet working on Catalyst? Surely we can't have reached Beta 3 without this working?!

Hi @JoeKun. Is there any update on this issue? My app adds Apple Music tracks to playlists and is seeing a similar problem. Basically it gets an http 20x reply (indicating success) after adding tracks to a playlist but some of the tracks are not actually getting added. Seems to have started in the last couple of weeks and only impacts certain users. Am very concerned in case this is a new server api release which is being rolled-out to a few initial servers. A lot of apps depend on this endpoint and it seems completely broken at the moment for impacted users. Thanks!

Still very much broken for me. Unfortunately I think it's an intermittent problem which is letting the occasion build through and is thereby convincing people who just tried something random that they found a "fix".

Wasn't working for me but just tried it a few seconds ago and it worked. However I then tried to upload the Catalyst version of my app and it's now broken again. Seems like the service is going up & down.

It's been working fine for me for the last few months. In fact I just uploaded a new build of my catalyst app today, with the same version & build number on iOS & macOS. Incidentally I now let Xcode manage build numbers for me.