stride3d/stride · error · InvalidOperationException

The given does not correspond to any existing part.

Error message

The given {nameof(parent.Id)} does not correspond to any existing part.

What it means

SceneEditorController.AddPart resolves the parent part (entity or scene) game-side via FindPart and throws InvalidOperationException when the parent id resolves to nothing. This guards against attaching a new game-side entity under a parent that no longer exists in the editor's part registry.

Solutions

1. Verify the parent part still exists in the hierarchy before invoking AddPart.
2. Reload/refresh the asset-side view model so its Id matches the currently loaded game-side scene.
3. Ensure the parent is a SceneRootViewModel when the target parent is a scene, so the LoadEntity branch is taken instead.

Example fix

// before
controller.AddPart(newPartViewModel, parentViewModel); // parent may be stale
// after
if (controller.FindPart(parentViewModel.Id) == null && !(parentViewModel is SceneRootViewModel))
    return; // parent no longer exists, abort add
controller.AddPart(newPartViewModel, parentViewModel);

if (!(parent is SceneRootViewModel) && controller.FindPart(parent.Id) == null)
    return; // parent part no longer exists
await controller.AddPart(newPart, parent);

static bool ParentExists(SceneEditorController c, AbsoluteId id) => c.FindPart(id) != null;

try { await controller.AddPart(part, parent); }
catch (InvalidOperationException ex) when (ex.Message.Contains("does not correspond to any existing part")) { await RefreshHierarchyAndRetryAsync(part, parent); }

When it happens

Trigger: AddPart called with a parent whose AbsoluteId (AssetId + ObjectId) does not match any registered part — e.g. FindPart(parent.Id) returns null while the parent is not a SceneRootViewModel (which would route through LoadEntity instead).

Common situations: Adding an entity under an entity that was just deleted or unloaded; ids stale after asset reload; referencing a part from a different scene asset than the one loaded.

Understand the failure class

Background: "Not found" and "does not exist" errors: why "Task not found", "No such folder", and "Can't find" fire when a lookup comes back empty — this error's family across 14 libraries.

Related errors

• The given does not correspond to any existing part.
• Cannot change the name of a
• No scene match the given
• Simulated GamePad does not exist
• Simulated Keyboard does not exist

AI-assisted analysis of stride3d/stride@96fad776d2 (2026-09-14). Data as JSON: /api/errors/7d390e1e5ca73e40. Report an issue: GitHub.

Appendix: source

Thrown at sources/editor/Stride.Assets.Presentation/AssetEditors/SceneEditor/Services/SceneEditorController.cs:61

        /// <inheritdoc />
        /// <seealso cref="SceneEditorGame.LoadEntity"/>
        public override Task AddPart([NotNull] EntityHierarchyElementViewModel parent, Entity assetSidePart)
        {
            EnsureAssetAccess();

            var gameSidePart = ClonePartForGameSide(parent.Asset.Asset, assetSidePart);
            return InvokeAsync(() =>
            {
                Logger.Debug($"Adding entity {assetSidePart.Id} to game-side scene");
                if (parent is SceneRootViewModel)
                {
                    Game.LoadEntity(gameSidePart, parent.Id.ObjectId);
                }
                else
                {
                    var parentEntity = (Entity)FindPart(parent.Id);
                    if (parentEntity == null)
                        throw new InvalidOperationException($"The given {nameof(parent.Id)} does not correspond to any existing part.");

                    GameSideNodeContainer.GetNode(parentEntity.Transform.Children).Add(gameSidePart.Transform);
                }
            });
        }

        /// <inheritdoc />
        /// <seealso cref="SceneEditorGame.UnloadEntity"/>
        public override Task RemovePart([NotNull] EntityHierarchyElementViewModel parent, Entity assetSidePart)
        {
            EnsureAssetAccess();

            return InvokeAsync(() =>
            {
                Logger.Debug($"Removing entity {assetSidePart.Id} from game-side scene");
                var partId = new AbsoluteId(parent.Id.AssetId, assetSidePart.Id);
                var part = (Entity)FindPart(partId);
                if (part == null)

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