---
title: MARKLESS_ELEMENT_HANDLE_PROP_UNSUPPORTED
description: "Nested prop-forwarded element handles are not supported yet: a Markless compiler error."
sidebar: { hidden: true }
search: { keywords: ["ELEMENT_HANDLE_PROP_UNSUPPORTED","element handle prop unsupported","markless error"] }
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---

**Error** from the compiler, while it builds your `.tsrx` files.

## What happened

Markless prints the message, the reason, and a suggestion:

```text
MARKLESS_ELEMENT_HANDLE_PROP_UNSUPPORTED: Cannot bind el={<handleName>} because this slice only supports element handles passed as direct component props, not through arrays or nested object props.
Direct prop forwarding has one parent-owned element() handle for one child prop. Array and nested object containers need deeper edge tracking before the compiler can prove the owning handle.
Pass the element() handle as its own component prop for now, or bind it in the component that renders the host element.
https://markless.dev/errors/MARKLESS_ELEMENT_HANDLE_PROP_UNSUPPORTED
```

Words in angle brackets change from case to case.

## How to fix it

Start with the suggestion in the message above.

This page has no guide yet. [Help write it](/contributing/improve-these-docs).

## Where it comes from

`@markless/compiler` raises this code. Source:

- [packages/compiler/src/passes/semantic-graph/diagnostics.ts](https://github.com/compiled-run/markless/blob/main/packages/compiler/src/passes/semantic-graph/diagnostics.ts)

Read [how to read a Markless error](/tooling/diagnostics), or go back to [all error codes](/errors).