# AddCustomMetadataPropertyOptions > Type in domain **Metadata** - HTML: [AddCustomMetadataPropertyOptions.html](AddCustomMetadataPropertyOptions.html) - Raw SDL: [AddCustomMetadataPropertyOptions.sdl](AddCustomMetadataPropertyOptions.sdl) - Covered by: [llms.txt](../llms.txt) ## Fields - `customMetadataProperty`: `CustomMetadataProperty!` — `CustomMetadataProperty` details.