studio-undeclared-group
An object uses a collision group the scene does not declare.
| Kind | Studio problem |
| Reported by | Studio validation: the Problems panel, Play, Publish and the MCP validate tool |
| Code in the Studio | undeclared-group |
This is a warning. Scenes list their collision groups; an undeclared group still works, but the scene's group list and pickers will not show it.
Fix
Add the group to the scene's groups, or pick a declared one.