> Portal Navigation: > > - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version. > - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages). > - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`). > - Top-level index of all portals: https://dev.wix.com/docs/llms.txt > - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt # Method name: data.items.isReferenced(dataCollectionId: string, field: string, referringItem: any, referencedItem: any, options: WixDataReadOptions) # Method Link: https://dev.wix.com/docs/sdk/business-solutions/data/items/is-referenced.md # Method Description: Checks if a reference to the referenced item exists in the specified field of the referring item. The `isReferenced()` method returns a Promise that resolves to true if the referring item contains a reference to the referenced item in the specified field. The Promise is rejected if the current user does not have read permissions for the collection. > **Note:** The `isReferenced()` method is not supported for [single-item collections](https://support.wix.com/en/article/cms-adding-and-setting-up-a-single-item-collection). # Method Permissions: - Read Data Items # Method Permissions Scopes IDs: - SCOPE.DC-DATA.READ # Method Code Examples: ## Get referenced items ```javascript import { items } from "@wix/data"; async function isReferencedItem() { const result = await items.isReferenced("movies", "actors", "00001", "12345"); const isReferenced = result; // true } ``` ## default ```javascript try { const result = await items.isReferenced("collection-0.28881812136576857", "refs", { _id: "6892593d-d57f-428d-bc53-3f0870a1beef" }, { _id: "28962158-e9e0-4a9c-8bf0-5f654d78ccb6" }, {}); return result; } catch (error) { console.error(error); throw error; } ```