diff --git a/openapi/v1/integrationCurator.yaml b/openapi/v1/integrationCurator.yaml
index a9dd5608..c072f3ff 100644
--- a/openapi/v1/integrationCurator.yaml
+++ b/openapi/v1/integrationCurator.yaml
@@ -482,6 +482,52 @@ paths:
       summary: Retrieve group metadata by querying study ID (accession)
       tags:
       - Expression integration as Curator
+  ? /api/v1/as-curator/integration/link/expression/group/{sourceId}/to/cell/group/{targetId}
+  : post:
+      description: |-
+        Create a link between a group of cell expression objects and a group of cell metadata.
+
+        A cell expression object can be linked to one cell metadata object only.
+      operationId: createExpressionGroupCellGroupLinkAsCurator
+      parameters:
+        - description: The ID (accession) of the cell expression group object
+          in: path
+          name: sourceId
+          required: true
+          schema:
+            type: string
+        - description: The ID (accession) of the cell metadata group object
+          in: path
+          name: targetId
+          required: true
+          schema:
+            type: string
+      responses:
+        "200":
+          content: {}
+          description: Some (not all) cell links were created.
+        "204":
+          content: {}
+          description: All links were created.
+        "400":
+          content: {}
+          description: "Incorrect Cell or Expression group provided, see error message for details."
+        "401":
+          content: {}
+          description: |-
+            User is not authenticated. Please supply a valid Access Token in the `Authorization` HTTP header (e.g. Authorization: bearer [token])
+             or  Genestack API token in the `Genestack-API-Token` header (this token may be obtained from the Genestack UI _Profile_ page).
+        "500":
+          content: {}
+          description: "An internal server error occurred. This indicates an unexpected\
+          \ failure in the Genestack system, please file a bug report to support@genestack.com,\
+          \ including the error details."
+      security:
+        - Access-token: []
+        - Genestack-API-Token: []
+      summary: Create a link between a group of cell expression objects and a group of cell metadata.
+      tags:
+        - Expression integration as Curator
   ? /api/v1/as-curator/integration/link/expression/group/{sourceId}/to/library/group/{targetId}
   : delete:
       description: Delete link between a group of expression objects and a group of