# CreateAttachmentInput > Input in domain **Assets** - HTML: [CreateAttachmentInput.html](CreateAttachmentInput.html) - Raw SDL: [CreateAttachmentInput.sdl](CreateAttachmentInput.sdl) - Covered by: [llms.txt](../llms.txt) ## Input fields - `parentId`: `ID!` — Parent Id. - `fileId`: `ID!` — File Id. Signed Id returned in `uploadFile`. - `name`: `String!` — Attachment name or display name. - `externalId`: `ID` — Attachment external Id.