> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://staging.chrisp.chat/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How can I review what dimensions currently have unmatched values that appear as 'empty' in my query results?

This is possible in the Data Digest tool. To do so:

1. Click on the hamburger button on the far right of the blue navigation bar.
2. Click on ‘Data Digest’ on the hamburger menu.
3. Navigate to the ‘Datasource overview’ tab.
4. Navigate down to the section titled ‘Unmatched Dimensions’. It will display all the dimension values that could not get matched in the pipeline.