> For the complete documentation index, see [llms.txt](https://docs.aurelia.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aurelia.io/developer-guides/error-messages/ui-virtualization/aur6004.md).

# AUR6004

## Error Message

`AUR6004: Invalid render target. The target element must have a parent node.`

## Description

This error occurs when the virtual repeater attempts to insert/move views, but the render target is detached (its `parentNode` is `null`). Virtualization requires the target to be in the DOM.

## Example Trigger

```html
<!-- ❌ The virtual-repeat host is conditionally removed while still active -->
<div if.bind="show">
  <div virtual-repeat.for="item of items">${item}</div>
</div>
```

If `show` flips rapidly during activation, the repeater may try to render into a detached node.

## Correct Usage

* Avoid tearing down the virtual-repeat host while it is initializing.
* Prefer guarding the entire component (or delaying data/activation) so the repeater initializes on a stable DOM tree.

## Troubleshooting

* Check lifecycle timing: ensure the host stays attached during bind/attach.
* If you toggle `if.bind`, consider debouncing the toggle or moving virtualization to a stable container.


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