diff --git a/docs/user/user.yaml b/docs/user/user.yaml
index 46590c71..985d3bd8 100644
--- a/docs/user/user.yaml
+++ b/docs/user/user.yaml
@@ -373,6 +373,16 @@ paths:
                 status: 404
                 code: 'DOCUMENT_NOT_FOUND'
                 message: 'User with the specified id was not found.'
+        409:
+          description: Conflict
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/Error'
+              example:
+                status: 409
+                code: 'VALIDATION_ERROR'
+                message: 'Validation for new user info failed.'
     delete:
       security:
         - cookieAuth: []