diff --git a/epdb/legacy_api.py b/epdb/legacy_api.py
index 4d2538af..079ea3d0 100644
--- a/epdb/legacy_api.py
+++ b/epdb/legacy_api.py
@@ -1,3 +1,4 @@
+from collections import defaultdict
 from typing import Any, Dict, List, Optional
 
 import nh3
@@ -11,8 +12,16 @@ from ninja.security import SessionAuth
 from utilities.chem import FormatConverter
 from utilities.misc import PackageExporter
 
-from .logic import GroupManager, PackageManager, SearchManager, SettingManager, UserManager
+from .logic import (
+    EPDBURLParser,
+    GroupManager,
+    PackageManager,
+    SearchManager,
+    SettingManager,
+    UserManager,
+)
 from .models import (
+    AdditionalInformation,
     Compound,
     CompoundStructure,
     Edge,
@@ -1329,7 +1338,14 @@ class ScenarioSchema(Schema):
 
     @staticmethod
     def resolve_collection(obj: Scenario):
-        return obj.additional_information
+        res = defaultdict(list)
+
+        for ai in obj.get_additional_information(direct_only=False):
+            data = ai.data
+            data["related"] = ai.content_object.simple_json() if ai.content_object else None
+            res[ai.type].append(data)
+
+        return res
 
     @staticmethod
     def resolve_review_status(obj: Rule):
@@ -1394,7 +1410,11 @@ def create_package_scenario(request, package_uuid):
         study_type = request.POST.get("type")
 
         ais = []
-        types = request.POST.get("adInfoTypes[]", "").split(",")
+        types = request.POST.get("adInfoTypes[]", [])
+
+        if types:
+            types = types.split(",")
+
         for t in types:
             ais.append(build_additional_information_from_request(request, t))
 
@@ -1436,6 +1456,49 @@ def delete_scenario(request, package_uuid, scenario_uuid):
         }
 
 
+@router.post(
+    "/package/{uuid:package_uuid}/additional-information", response={200: str | Any, 403: Error}
+)
+def create_package_additional_information(request, package_uuid):
+    from utilities.legacy import build_additional_information_from_request
+
+    try:
+        p = get_package_for_write(request.user, package_uuid)
+
+        scen = request.POST.get("scenario")
+        scenario = Scenario.objects.get(package=p, url=scen)
+
+        url_parser = EPDBURLParser(request.POST.get("attach_obj"))
+        attach_obj = url_parser.get_object()
+
+        if not hasattr(attach_obj, "additional_information"):
+            raise ValueError("Can't attach additional information to this object!")
+
+        if not attach_obj.url.startswith(p.url):
+            raise ValueError(
+                "Additional Information can only be set to objects stored in the same package!"
+            )
+
+        types = request.POST.get("adInfoTypes[]", "").split(",")
+
+        for t in types:
+            ai = build_additional_information_from_request(request, t)
+
+            AdditionalInformation.create(
+                p,
+                ai,
+                scenario=scenario,
+                content_object=attach_obj,
+            )
+
+        # TODO implement additional information endpoint ?
+        return redirect(f"{scenario.url}")
+    except ValueError:
+        return 403, {
+            "message": f"Getting Package with id {package_uuid} failed due to insufficient rights!"
+        }
+
+
 ###########
 # Pathway #
 ###########
diff --git a/epdb/models.py b/epdb/models.py
index 558eae66..5e011ae6 100644
--- a/epdb/models.py
+++ b/epdb/models.py
@@ -4191,7 +4191,6 @@ class AdditionalInformation(models.Model):
         ai: "EnviPyModel",
         scenario=None,
         content_object=None,
-        skip_cleaning=False,
     ):
         add_inf = AdditionalInformation()
         add_inf.package = package
diff --git a/static/js/alpine/components/schema-form.js b/static/js/alpine/components/schema-form.js
index 223981a7..5257bb52 100644
--- a/static/js/alpine/components/schema-form.js
+++ b/static/js/alpine/components/schema-form.js
@@ -88,6 +88,7 @@ document.addEventListener("alpine:init", () => {
       options.debugErrors ??
       (typeof window !== "undefined" &&
         window.location?.search?.includes("debugErrors=1")),
+    attach_object: options.attach_object || null,
 
     async init() {
       if (options.schemaUrl) {
diff --git a/templates/components/schema_form.html b/templates/components/schema_form.html
index 3036b4b5..75cc9591 100644
--- a/templates/components/schema_form.html
+++ b/templates/components/schema_form.html
@@ -18,8 +18,25 @@
   <!-- Schema form -->
   <template x-if="schema && !loading">
     <div class="space-y-4">
+      <template x-if="attach_object">
+        <div>
+          <h4>
+            <span
+              class="text-lg font-semibold"
+              x-text="schema['x-title'] + ' attached to'"
+            ></span>
+            <a
+              class="text-lg font-semibold underline text-blue-600 hover:text-blue-800"
+              :href="attach_object.url"
+              x-text="attach_object.name"
+              target="_blank"
+            ></a>
+          </h4>
+        </div>
+      </template>
+
       <!-- Title from schema -->
-      <template x-if="schema['x-title'] || schema.title">
+      <template x-if="(schema['x-title'] || schema.title) && !attach_object">
         <h4
           class="text-lg font-semibold"
           x-text="data.name || schema['x-title'] || schema.title"
diff --git a/templates/objects/scenario.html b/templates/objects/scenario.html
index 093bb292..f723cfe0 100644
--- a/templates/objects/scenario.html
+++ b/templates/objects/scenario.html
@@ -189,7 +189,8 @@
                         x-data="schemaRenderer({
                              rjsf: schemas[item.type.toLowerCase()],
                              data: item.data,
-                             mode: 'view'
+                             mode: 'view',
+                             attach_object: item.attach_object
                            })"
                         x-init="init()"
                       >