> ## Documentation Index
> Fetch the complete documentation index at: https://learn.nextedy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Loading and Display Issues

> Loading and Display Issues — common questions about Nextedy POWERSHEET.

> **Why does my Powersheet show a blank or empty sheet?**
>
> A blank sheet typically means the data source query returned no matching work items, the data model referenced in `sources` does not exist, or there is a YAML syntax error in the configuration. Start by verifying the data model exists in **Administration > Nextedy POWERSHEET > Data Models**, then confirm work items of the expected `polarionType` exist in the project. Check the browser developer console for error messages that pinpoint the failure.
>
> > [!TIP]
> >
> > **Start simple**
> >
> > When setting up a new sheet, begin with a minimal single-entity configuration and extend incrementally. Jumping straight to a complex multi-level RTM often leads to hard-to-diagnose errors.

> **Why is my Powersheet stuck in read-only mode?**
>
> Read-only mode can be triggered by several conditions. Check the following causes in order:
>
> | Cause | Resolution |
> | - | - |
> | Invalid or expired license | Renew via **Administration > Nextedy POWERSHEET > License** |
> | User lacks write permissions | Ask your Polarion administrator to assign the appropriate role |
> | Document opened at a historical revision | Navigate to the current (HEAD) revision |
> | Column-level `isReadOnly` set to `true` | Remove or set `isReadOnly: false` on the affected column |
> | Formatter applies a read-only style | Check the `formatters` section for rules that force read-only rendering |
> | The sheet reports configuration issues in the bar above it | Fix the reported columns — see [Fix Column Configuration Issues](https://learn.nextedy.com/powersheet/guides/troubleshooting/fix-column-configuration-issues.md) |
>
> A sheet made read-only by a configuration problem says so on the chip in the bar above it, and the panel behind it states that the sheet stays read-only until the problem is fixed. That is the one cause you do not have to work down this table to find.
>
> See [Licensing FAQ](https://learn.nextedy.com/powersheet/faq/licensing.md) for details on license-related access restrictions.

> **Why are some columns not showing data?**
>
> Empty columns usually indicate a mismatch between the column binding path in the sheet configuration and the data model. Verify that the path (e.g., `systemRequirements.systemRequirement.severity`) follows a valid expansion path defined in your data model `relationships`, that the referenced properties exist on the target entity type in `domainModelTypes`, and that your data source `expand` array includes the navigation properties the column path depends on. If the expansion path is missing from `sources`, the related data simply will not be loaded.


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