# CatalogColumnUsageReason

> Enum in domain **Catalogs**

- HTML: [CatalogColumnUsageReason.html](CatalogColumnUsageReason.html)
- Raw SDL: [CatalogColumnUsageReason.sdl](CatalogColumnUsageReason.sdl)
- Covered by: [llms.txt](../llms.txt)

## Values

- `USED_AS_METADATA_DISPLAY_COLUMN`
- `USED_BY_EXTERNAL_REFERENCE`