# studio-sub-row-placement

> A row is placed directly inside another row without being a sub-row.

| | |
| --- | --- |
| Kind | Studio problem |
| Reported by | Studio validation: the Problems panel, Play, Publish and the MCP `validate` tool |
| Code in the Studio | `sub-row-placement` |

Rows nest only as sub-rows (_if_, _otherwise_, _for each_, _after_). A plain row inside a row usually comes from a hand-built or imported project.

## Fix

- Drag the row out to the sheet or a group, or turn it into a sub-row.

## See also

- [Problems and validation](/studio/playtesting)