2019.2.16f1 - Identifier uniqueness violation

Unity Engine
1

On upgrading my project to 2019.2.16f1, I get this warning in the console:

Identifier uniqueness violation: 'Name:Player_01_anims_30, Type:Sprite'. Multiple Objects with the same name/type are generated by this Importer. There is no guarantee that subsequent imports of this asset will properly re-link to these targets.
0x0000000142CC4BFC (Unity) StackWalker::GetCurrentCallstack
0x0000000142CC80D1 (Unity) StackWalker::ShowCallstack
0x0000000141555E45 (Unity) GetStacktrace
0x000000014387CD5B (Unity) DebugStringToFile
0x00000001401421D7 (Unity) DebugStringToFile<core::basic_string<char,core::StringStorageDefault<char> > >
0x00000001416538DB (Unity) AssetDatabaseV1::UpdateAsset
0x0000000141669EBF (Unity) AssetInterface::ProcessAssetsImplementation
0x0000000141674AAD (Unity) AssetInterface::StopAssetEditing
0x000000014166E4FE (Unity) AssetInterface::RefreshInternal
0x000000014166B4D8 (Unity) AssetInterface::Refresh
0x00000001415F83B0 (Unity) AssetDatabase::Refresh
0x0000000140CBA068 (Unity) Application::InitializeProject
0x000000014155FB03 (Unity) WinMain
0x0000000144217952 (Unity) __scrt_common_main_seh
0x000000007711556D (kernel32) BaseThreadInitThunk
0x000000007737372D (ntdll) RtlUserThreadStart

I’m getting the same warning about three other sprites:

  • Player_01_anims_33,
  • Player_01_anims_36,
  • Player_01_anims_41.

I have no idea what they mean. The sprite sheet to which the sprites belong contains 58 different sprites, none of them of the same name. A sprite sheet cannot contain several sprites that have the same name anyway.

The message disappear after I clear the console and doesn’t reappear, still, this doesn’t feel right. Anybody has an idea? Thank you.

I also got the same message when I upgraded my project to 2020.1.0a16 and 2019.3.0f3.

2

I just got this as well in 2019.3.0f3 and it appears to be a bug in the sprite editor. If you look in the meta file for the sprite sheet, you will see there is indeed two of the same sprite. How it got there I have no idea but the duplicate doesn’t show up in the editor and there’s no way to delete it through the editor.

The only solution I found was to delete the meta file and recreate the sprite sheet from scratch.

3

Thanks for your input. :slight_smile:

I must admit that I ended up completely ignoring this warning since there is no problem at all with the sprite itself and the animations work perfectly; I’m still getting it from one version to the other but I guess it will ultimately stop showing up.