# RemoveCatalogColumnsBlocked > Type in domain **Catalogs** - HTML: [RemoveCatalogColumnsBlocked.html](RemoveCatalogColumnsBlocked.html) - Raw SDL: [RemoveCatalogColumnsBlocked.sdl](RemoveCatalogColumnsBlocked.sdl) - Covered by: [llms.txt](../llms.txt) ## Fields - `blockedColumns`: `[CatalogColumnUsage!]!` _(beta)_ — The in-use `CatalogColumn`s that prevented the removal, with the reasons each is in use.