ASA doesn't support Unity 2022 yet. Unity 2021.3 (LTS) is recommended. In particular, Unity 2022 uses AR Foundation 5, while ASA currently targets AR Foundation 4. There is a work item to enable AR Foundation 5.0+ support #389 . #389 includes discussion of modifications you can make to your asmdef to reference the Unity.XR.CoreUtils assembly. That should get you unblocked here, but you may run into other issues. Unless you have a compelling need for Unity 2022 I'd recommend staying with 2021.3 until ASA officially supports it.

Unity error when using azure spatial anchors

Mike Mike 25

2023-03-22_111452

Mike Mike 25 Reputation points

2023-03-22T10:28:46.9833333+00:00

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Rob Caplan - MSFT 5,437 Reputation points Microsoft Employee

2023-03-22T19:57:40.6333333+00:00

Can you please include the text of the error and more context around what you're trying to do when you get it, which versions of Unity and ASA you're using, and which platform you're targeting?

Mike Mike 25

Hey @Rob Caplan - MSFT i pasted here the errors. I havent done anything yet its a new URP Unity (latest 2022) project. I want to make a simple app for android that a user places an object in any place and others are able to see it. But when i install the anchors sdk packages from the documentation guide i get these errors

Library\PackageCache\com.microsoft.azure.spatial-anchors-sdk.core@fc109db5a78b\Runtime\Scripts\SpatialAnchorManager.cs(404,17): error CS0012: The type 'XROrigin' is defined in an assembly that is not referenced. You must add a reference to assembly 'Unity.XR.CoreUtils, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.

Library\PackageCache\com.microsoft.azure.spatial-anchors-sdk.core@fc109db5a78b\Runtime\Scripts\SpatialAnchorManager.cs(404,61): error CS0012: The type 'XROrigin' is defined in an assembly that is not referenced. You must add a reference to assembly 'Unity.XR.CoreUtils, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.

Library\PackageCache\com.microsoft.azure.spatial-anchors-sdk.core@fc109db5a78b\Runtime\Scripts\SpatialAnchorManager.cs(404,61): error CS1061: 'ARSessionOrigin' does not contain a definition for 'enabled' and no accessible extension method 'enabled' accepting a first argument of type 'ARSessionOrigin' could be found (are you missing a using directive or an assembly reference?)

Library\PackageCache\com.microsoft.azure.spatial-anchors-sdk.core@fc109db5a78b\Runtime\Scripts\SpatialAnchorManager.cs(797,31): error CS0311: The type 'UnityEngine.XR.ARFoundation.ARSessionOrigin' cannot be used as type parameter 'T' in the generic type or method 'Object.FindObjectOfType<T>()'. There is no implicit reference conversion from 'UnityEngine.XR.ARFoundation.ARSessionOrigin' to 'UnityEngine.Object'.

Library\PackageCache\com.microsoft.azure.spatial-anchors-sdk.core@fc109db5a78b\Runtime\Scripts\SpatialAnchorManager.cs(797,31): error CS0012: The type 'XROrigin' is defined in an assembly that is not referenced. You must add a reference to assembly 'Unity.XR.CoreUtils, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.

I suspect it confuses some package/namespace. Maybe i need to do something Unity XR related? Also the docs are from 2022 so im thinking maybe something changed. These are the packages in the project if it helps:
https://imgur.com/a/20gNtmf

Accepted answer

Rob Caplan - MSFT 5,437 Reputation points Microsoft Employee

2023-03-23T22:56:06.5+00:00

ASA doesn't support Unity 2022 yet. Unity 2021.3 (LTS) is recommended.

In particular, Unity 2022 uses AR Foundation 5, while ASA currently targets AR Foundation 4.

There is a work item to enable AR Foundation 5.0+ support #389.

#389 includes discussion of modifications you can make to your asmdef to reference the Unity.XR.CoreUtils assembly. That should get you unblocked here, but you may run into other issues.

Unless you have a compelling need for Unity 2022 I'd recommend staying with 2021.3 until ASA officially supports it.
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1 person found this answer helpful.
Mike Mike 25 Reputation points

2023-03-24T04:59:22.23+00:00

I will do that, thanks a lot for the help. Any idea when 2022 will be supported?

Rob Caplan - MSFT 5,437 Reputation points Microsoft Employee

2023-03-26T15:18:55.15+00:00

I can't speak to specific dates. We generally target the latest LTS release, and Unity 2022 should move to LTS soon. How long it takes to update ASA after Unity 2022 LTS is available depends on how much in ASA and its dependencies needs to be updated.

Mike Mike 25 Reputation points

2023-03-27T17:52:51.4133333+00:00

Can i bind anchors to meshes instead of gps coordinates? Unfortunately object anchors is only for hololens

Rob Caplan - MSFT 5,437 Reputation points Microsoft Employee

2023-03-29T22:25:17.98+00:00

Can you please ask new questions in new threads? They're much less likely to be missed that way.

Please include more details about your scenario and what you're trying to do. Spatial Anchors don't typically bind directly to either meshes or gps coordinates, and without knowing where you're trying to go with them, we can't provide good advice on how to get there.

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