Issue with Shared Spatial Anchors Between Applications - Failure_GroupNotFound Error

We are currently experiencing an issue with the use of Shared Spatial Anchors between two different applications. Our use case consists of:

Creating and saving spatial anchors in a first application

Sharing these anchors via a group UUID

Loading these same anchors in a second, different application (different package ID)

Devices: Meta Quest 3

Meta XR Core SDK: Recent version (post v74)

Configuration: Enhanced spatial services enabled in device settings

Sharing method: Group-based with a fixed UUID

Symptoms

The application works perfectly in Unity editor mode

After building and installing on the device, we get the error Failure_GroupNotFound (equivalent to OVRPlugin.Result.Failure_SpaceGroupNotFound) when trying to load shared anchors

Here's an overview of our implementation:

Application 1 (creating and sharing spatial anchors) anchors)

csharpCopier// Create and save the anchor

var spatialAnchor = GetComponent<OVRSpatialAnchor>();

await spatialAnchor.SaveAnchorAsync();

// Share with a fixed group UUID

Guid groupUuid = new Guid("our-fixed-uuid-for-both-apps");

var shareResult = await spatialAnchor.ShareAsync(groupUuid);

// Check the result

if (shareResult.IsSuccess()) {

Debug.Log("Anchor shared successfully: " + spatialAnchor.Uuid);

} else {

Debug.LogError("Sharing failed: " + shareResult);

}

Application 2 (Loading Anchors)

csharpCopier// Attempting to load with the same group UUID

Guid groupUuid = new Guid("our-fixed-uuid-for-both-applications");

var unboundAnchors = new List<UnboundAnchor>();

var loadResult = await OVRSpatialAnchor.LoadUnboundSharedAnchorsAsync(groupUuid, unboundAnchors);

// This is where we get the Failure_GroupNotFound error

if (loadResult.Success) {

Debug.Log("Anchors loaded: " + unboundAnchors.Count);

} else {

Debug.LogError("Load failed: " + loadResult.Error);

}

Enhanced Spatial Services are enabled on the device.

The necessary permissions are included in the Android manifest for both apps:

xmlCopy<uses-permission android:name="com.oculus.permission.USE_ANCHOR_API" />

<uses-permission android:name="com.oculus.permission.IMPORT_EXPORT_IOT_MAP_DATA" android:required="false" />

<uses-feature android:name="com.oculus.feature.PASSTHROUGH" android:required="true" />

OVRManager is correctly configured with Shared Spatial Anchors enabled.

The feature works between users of the same app.

The same group UUID is used between both apps.

Is it possible to share spatial anchors between two apps with different package IDs? Are there any additional permissions or configurations required for sharing between separate applications?

Why do I get the Failure_GroupNotFound error in build mode but not in editor mode?

Are there any diagnostic tools to better understand what's happening with anchor groups?

Any help or advice would be greatly appreciated. Thank you!