> ## Documentation Index
> Fetch the complete documentation index at: https://docs.depict.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Link the group's collections that share a handle

> Creates a cross-store link for every collection handle present in more than one store of `merchant_id`'s group (existing links are kept), then, if the group has auto-replicate on, stamps the new links to replicate from its source. Call it after connecting a store. Requires multi-store in the plan (402 otherwise). Answers null.



## OpenAPI

````yaml /api-reference/openapi/lite.json post /multi-store/create-collection-mappings/{merchant_id}
openapi: 3.1.0
info:
  title: Search & Merchandising API
  version: 1.0.0
  description: >-
    REST API behind Depict: Search & Merchandising, the native Shopify app:
    onboarding, collections, boost & bury, dashboards, A/B testing and
    multi-store management. Endpoints are served under the /api/lite prefix and
    are authenticated with the Shopify session token that App Bridge issues to
    the embedded app.
servers:
  - url: /api/lite
security:
  - ShopifySessionToken: []
paths:
  /multi-store/create-collection-mappings/{merchant_id}:
    post:
      summary: Link the group's collections that share a handle
      description: >-
        Creates a cross-store link for every collection handle present in more
        than one store of `merchant_id`'s group (existing links are kept), then,
        if the group has auto-replicate on, stamps the new links to replicate
        from its source. Call it after connecting a store. Requires multi-store
        in the plan (402 otherwise). Answers null.
      operationId: multiStoreCreateCollectionMappings
      parameters:
        - schema:
            type: string
            description: Lite merchant id, e.g. `shopify-<shop id>`.
          required: true
          description: Lite merchant id, e.g. `shopify-<shop id>`.
          name: merchant_id
          in: path
      responses:
        '200':
          description: Done.
          content:
            application/json:
              schema:
                type: 'null'
        '400':
          description: '`error_code: NOT_IN_GROUP`: the merchant is in no multi-store group.'
          content:
            application/json:
              schema:
                type: object
                properties:
                  detail:
                    type: string
                  error_code:
                    type: string
                    enum:
                      - NOT_IN_GROUP
                required:
                  - detail
        '401':
          description: Not authenticated.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Detail'
        '402':
          description: >-
            The plan does not include multi-store (Merchandising at Large or
            above).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Paywall'
        '403':
          description: Authenticated, but this identity may not call the API.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Detail'
        '404':
          description: Merchant not found for this caller.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Detail'
        '500':
          description: Internal error.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Detail'
components:
  schemas:
    Detail:
      type: object
      properties:
        detail:
          type: string
      required:
        - detail
      description: 'Every 4xx/5xx body: `{detail}`.'
    Paywall:
      type: object
      properties:
        detail:
          type: string
        code:
          type: string
          enum:
            - product_required
            - collection_limit_exceeded
            - installation_frozen
        product:
          type: string
          enum:
            - search
            - recs
            - vm
        limit:
          type: integer
      required:
        - detail
        - code
      description: >-
        402: the merchant's plan does not include this. Branch on `code`; show
        `detail`.
  securitySchemes:
    ShopifySessionToken:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: >-
        Shopify App Bridge session token of the embedded Depict: Search &
        Merchandising app. The shop in the token determines the merchant;
        merchant_id parameters must belong to that shop.

````