> For the complete documentation index, see [llms.txt](https://docs.b2ihealthcare.com/snowray/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.b2ihealthcare.com/snowray/v2.11/reference/resources/valuesets/authoring/ecl-syntax-error.md).

# ECL syntax error

Value Sets might contain incorrectly constructed ECL queries, which are identified and flagged on the ***Content*** tab of the resource. 

<figure><img src="https://2644161733-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FnYnxbPtMuIDeL8O6cflh%2Fuploads%2FPy3KB8fPo1JL0LSGK1Kw%2Fvalue_set_syntax_error.gif?alt=media&amp;token=5730161e-42e8-4717-8a41-cee2be52f9c8" alt=""><figcaption><p>Value Set ECL Syntax Error Reporting</p></figcaption></figure>

Syntax errors are marked with a dynamic post-it style tag in the definition list.&#x20;

{% hint style="info" %}
The presence of an ECL syntax error also disables the *Members* section until a fix is in place.
{% endhint %}

Hovering over the color indication at the end of the clause row reveals the post-it style tag: <img src="https://2644161733-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FnYnxbPtMuIDeL8O6cflh%2Fuploads%2Fumztl8aFc3fV9x7SkHkw%2Fecl_syntax_error_tag.png?alt=media&amp;token=3f8254a1-45e9-49fc-bf0a-97b6d327c6e3" alt="" data-size="original">.

{% hint style="info" %}
To display information about the syntax error itself, leave your cursor over the tag and wait for the tooltip to appear.
{% endhint %}

Clicking on the tag invokes the Advanced Clause Editor, where the error can be fixed.

{% hint style="info" %}
The ![](https://2644161733-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FnYnxbPtMuIDeL8O6cflh%2Fuploads%2Fumztl8aFc3fV9x7SkHkw%2Fecl_syntax_error_tag.png?alt=media\&token=3f8254a1-45e9-49fc-bf0a-97b6d327c6e3) tag is only clickable in editing mode.
{% endhint %}