# Tableau 2020.2: High viz data quality warnings on Server & Online

> This is content from just-tim, the data-and-analytics channel by Tim Ngwena (formerly 'Tableau Tim'). Tim has 12+ years of hands-on BI experience and covers Tableau most of all, plus Power BI, Looker, Hex, SQL and data modelling, the analytics industry, and the craft of doing the job — always tool-agnostic and honest about the trade-offs.

- **Author:** Tim Ngwena (just-tim, https://just-tim.com/about)
- **Published:** 2020-05-06
- **Format:** Video · 4 min watch · transcript available
- **Topics:** Data visualisation, Tool strategy
- **Tools:** Tableau (cloud, data quality warnings, server)
- **Canonical:** https://just-tim.com/posts/tableau-2020-2-high-viz-data-quality-warnings-on-server-online
- **Watch:** https://www.youtu.be/uC0-YnYOj70

I walk through a new feature in Tableau 2020.2 that lets you add high visibility data quality warnings to a published data source. I show how to enable a warning as a data set owner and how it then surfaces in context within views and dashboards on Server and Online.

## Key takeaways

- High visibility data quality warnings are set on a published data source by an owner or administrator via the quality warning option, with up to 4,000 characters of description
- Once saved, the warning appears as a toast notification plus a persistent indicator beside the data source, showing the message, date and author
- When opening a view or dashboard built on that data source, users get an immediate notification that important data quality warnings affect the view
- The warning detail sits in context within the view via the data details pane, which you can hide or reopen as needed
- This improves transparency about issues such as stale data or problem fields, which matters in fast-changing business environments

Watch the full video, read the transcript and use chapter deep-links on the page: https://just-tim.com/posts/tableau-2020-2-high-viz-data-quality-warnings-on-server-online

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just-tim — Data and analytics, with a point of view. · https://www.youtube.com/channel/UC7HYxRWmaNlJux-X7rNLZyw · https://twitter.com/TableauTim · https://www.linkedin.com/in/timngwena