diff --git a/backend/benefit/applications/enums.py b/backend/benefit/applications/enums.py
index c102863f05..d059e69ae4 100644
--- a/backend/benefit/applications/enums.py
+++ b/backend/benefit/applications/enums.py
@@ -100,6 +100,7 @@ class AttachmentType(models.TextChoices):
     EMPLOYEE_CONSENT = "employee_consent", _("employee consent")
     FULL_APPLICATION = "full_application", _("full application")
     OTHER_ATTACHMENT = "other_attachment", _("other attachment")
+    PDF_SUMMARY = "pdf_summary", _("pdf summary")
 
 
 class AttachmentRequirement(models.TextChoices):
diff --git a/backend/benefit/applications/migrations/0048_alter_attachment_attachment_type.py b/backend/benefit/applications/migrations/0048_alter_attachment_attachment_type.py
new file mode 100644
index 0000000000..49d8130c25
--- /dev/null
+++ b/backend/benefit/applications/migrations/0048_alter_attachment_attachment_type.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.23 on 2023-12-20 11:47
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('applications', '0047_remove_phone_number_restriction'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='attachment',
+            name='attachment_type',
+            field=models.CharField(choices=[('employment_contract', 'employment contract'), ('pay_subsidy_decision', 'pay subsidy decision'), ('commission_contract', 'commission contract'), ('education_contract', 'education contract of the apprenticeship office'), ('helsinki_benefit_voucher', 'helsinki benefit voucher'), ('employee_consent', 'employee consent'), ('full_application', 'full application'), ('other_attachment', 'other attachment'), ('pdf_summary', 'pdf summary')], max_length=64, verbose_name='attachment type in business rules'),
+        ),
+    ]
diff --git a/backend/benefit/applications/services/ahjo_integration.py b/backend/benefit/applications/services/ahjo_integration.py
index c92c363e49..79b5f558ff 100644
--- a/backend/benefit/applications/services/ahjo_integration.py
+++ b/backend/benefit/applications/services/ahjo_integration.py
@@ -13,6 +13,7 @@
 import requests
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured, ObjectDoesNotExist
+from django.core.files.base import ContentFile
 from django.db.models import QuerySet
 from django.urls import reverse
 
@@ -20,11 +21,15 @@
     AhjoRequestType,
     AhjoStatus as AhjoStatusEnum,
     ApplicationStatus,
+    AttachmentType,
 )
-from applications.models import AhjoSetting, AhjoStatus, Application
+from applications.models import AhjoSetting, AhjoStatus, Application, Attachment
 from applications.services.ahjo_authentication import AhjoConnector
 from applications.services.ahjo_payload import prepare_open_case_payload
 from applications.services.applications_csv_report import ApplicationsCsvService
+from applications.services.generate_application_summary import (
+    generate_application_summary_file,
+)
 from companies.models import Company
 
 
@@ -366,6 +371,21 @@ def export_application_batch(batch) -> bytes:
     return generate_zip(pdf_files)
 
 
+def generate_pdf_summary_as_attachment(application: Application) -> Attachment:
+    """Generate a pdf summary of the given application and return it as an Attachment."""
+    pdf_data = generate_application_summary_file(application)
+    pdf_file = ContentFile(
+        pdf_data, f"application_summary_{application.application_number}.pdf"
+    )
+    attachment = Attachment.objects.create(
+        application=application,
+        attachment_file=pdf_file,
+        content_type="application/pdf",
+        attachment_type=AttachmentType.PDF_SUMMARY,
+    )
+    return attachment
+
+
 def get_token() -> str:
     """Get the access token from Ahjo Service."""
     try:
@@ -484,7 +504,8 @@ def open_case_in_ahjo(application_id: uuid.UUID):
         headers = prepare_headers(
             ahjo_token.access_token, application.id, AhjoRequestType.OPEN_CASE
         )
-        data = prepare_open_case_payload(application)
+        pdf_summary = generate_pdf_summary_as_attachment(application)
+        data = prepare_open_case_payload(application, pdf_summary)
         send_request_to_ahjo(AhjoRequestType.OPEN_CASE, headers, data, application)
     except ObjectDoesNotExist as e:
         LOGGER.error(f"Object not found: {e}")
diff --git a/backend/benefit/applications/services/ahjo_payload.py b/backend/benefit/applications/services/ahjo_payload.py
index 2caf2c51a3..f913ff96dc 100644
--- a/backend/benefit/applications/services/ahjo_payload.py
+++ b/backend/benefit/applications/services/ahjo_payload.py
@@ -5,6 +5,7 @@
 from django.conf import settings
 from django.urls import reverse
 
+from applications.enums import AttachmentType
 from applications.models import Application, Attachment
 from common.utils import hash_file
 from users.models import User
@@ -98,8 +99,11 @@ def _prepare_record(
     }
 
 
-def _prepare_case_records(application: Application) -> List[dict]:
-    """Prepare the list of case records"""
+def _prepare_case_records(
+    application: Application, pdf_summary: Attachment
+) -> List[dict]:
+    """Prepare the list of case records from  application's attachments,
+    including the pdf summary of the application."""
     case_records = []
     handler = application.calculation.handler
     main_document_record = _prepare_record(
@@ -107,13 +111,15 @@ def _prepare_case_records(application: Application) -> List[dict]:
         "hakemus",
         application.created_at.isoformat(),
         application.application_number,
-        [],  # TODO Pdf version of the application goes here with prepare_record()
+        [_prepare_record_document_dict(pdf_summary)],
         handler,
     )
 
     case_records.append(main_document_record)
 
-    for attachment in application.attachments.all():
+    for attachment in application.attachments.exclude(
+        attachment_type=AttachmentType.PDF_SUMMARY
+    ):
         document_record = _prepare_record(
             "Hakemuksen Liite",
             "liite",
@@ -127,8 +133,10 @@ def _prepare_case_records(application: Application) -> List[dict]:
     return case_records
 
 
-def prepare_open_case_payload(application: Application) -> dict:
+def prepare_open_case_payload(
+    application: Application, pdf_summary: Attachment
+) -> dict:
     "Prepare the complete dictionary payload that is sent to Ahjo"
-    case_records = _prepare_case_records(application)
+    case_records = _prepare_case_records(application, pdf_summary)
     payload = _prepare_top_level_dict(application, case_records)
     return payload
diff --git a/backend/benefit/applications/tests/conftest.py b/backend/benefit/applications/tests/conftest.py
index 8c6aa1a981..a8c9a233d6 100755
--- a/backend/benefit/applications/tests/conftest.py
+++ b/backend/benefit/applications/tests/conftest.py
@@ -9,7 +9,6 @@
 
 from applications.enums import ApplicationStatus, BenefitType
 from applications.models import Application
-from applications.services.ahjo_payload import prepare_open_case_payload
 from applications.services.applications_csv_report import ApplicationsCsvService
 from applications.tests.factories import (
     ApplicationBatchFactory,
@@ -353,8 +352,3 @@ def pytest_sessionfinish(session, exitstatus):
         except OSError as e:
             print(f"Error while deleting file in media folder: {e}")
     print(f"\nTests finished, deleted {number_of_files} files in the media folder")
-
-
-@pytest.fixture()
-def ahjo_open_case_payload(decided_application):
-    return prepare_open_case_payload(decided_application)
diff --git a/backend/benefit/applications/tests/test_ahjo_integration.py b/backend/benefit/applications/tests/test_ahjo_integration.py
index b8e67caa35..b268d2aa8d 100644
--- a/backend/benefit/applications/tests/test_ahjo_integration.py
+++ b/backend/benefit/applications/tests/test_ahjo_integration.py
@@ -1,4 +1,5 @@
 import io
+import os
 import uuid
 import zipfile
 from datetime import date
@@ -16,14 +17,16 @@
     AhjoRequestType,
     AhjoStatus,
     ApplicationStatus,
+    AttachmentType,
     BenefitType,
 )
-from applications.models import Application
+from applications.models import Application, Attachment
 from applications.services.ahjo_integration import (
     ACCEPTED_TITLE,
     export_application_batch,
     ExportFileInfo,
     generate_composed_files,
+    generate_pdf_summary_as_attachment,
     generate_single_approved_file,
     generate_single_declined_file,
     get_application_for_ahjo,
@@ -476,3 +479,21 @@ def test_get_application_for_ahjo_no_ad_username(decided_application):
     # Try to get an application with a handler that has no ad_username
     with pytest.raises(ImproperlyConfigured):
         get_application_for_ahjo(decided_application.id)
+
+
+@pytest.mark.django_db
+def test_generate_pdf_summary_as_attachment(decided_application):
+    attachment = generate_pdf_summary_as_attachment(decided_application)
+    assert isinstance(attachment, Attachment)
+
+    assert attachment.application == decided_application
+    assert attachment.content_type == "application/pdf"
+    assert attachment.attachment_type == AttachmentType.PDF_SUMMARY
+    assert (
+        attachment.attachment_file.name
+        == f"application_summary_{decided_application.application_number}.pdf"
+    )
+    assert attachment.attachment_file.size > 0
+    assert os.path.exists(attachment.attachment_file.path)
+    if os.path.exists(attachment.attachment_file.path):
+        os.remove(attachment.attachment_file.path)
diff --git a/backend/benefit/applications/tests/test_ahjo_payload.py b/backend/benefit/applications/tests/test_ahjo_payload.py
index b3fe4e9efa..a946bbd332 100644
--- a/backend/benefit/applications/tests/test_ahjo_payload.py
+++ b/backend/benefit/applications/tests/test_ahjo_payload.py
@@ -1,5 +1,8 @@
+from django.core.files.base import ContentFile
 from django.urls import reverse
 
+from applications.enums import AttachmentType
+from applications.models import Attachment
 from applications.services.ahjo_payload import (
     _prepare_case_records,
     _prepare_record,
@@ -47,6 +50,18 @@ def test_prepare_record_document_dict(decided_application, settings):
 def test_prepare_case_records(decided_application, settings):
     settings.DEBUG = True
     application = decided_application
+
+    fake_file = ContentFile(
+        b"fake file content",
+        f"application_summary_{application.application_number}.pdf",
+    )
+
+    fake_summary = Attachment.objects.create(
+        application=application,
+        attachment_file=fake_file,
+        content_type="application/pdf",
+        attachment_type=AttachmentType.PDF_SUMMARY,
+    )
     handler = application.calculation.handler
     handler_name = f"{handler.last_name}, {handler.first_name}"
     want = [
@@ -59,7 +74,7 @@ def test_prepare_case_records(decided_application, settings):
             "Language": "fi",
             "PersonalData": "Sisältää erityisiä henkilötietoja",
             "Reference": str(application.application_number),
-            "Documents": [],
+            "Documents": [_prepare_record_document_dict(fake_summary)],
             "Agents": [
                 {
                     "Role": "mainCreator",
@@ -70,7 +85,9 @@ def test_prepare_case_records(decided_application, settings):
         }
     ]
 
-    for attachment in application.attachments.all():
+    for attachment in application.attachments.exclude(
+        attachment_type=AttachmentType.PDF_SUMMARY
+    ):
         document_record = _prepare_record(
             "Hakemuksen Liite",
             "liite",
@@ -82,7 +99,7 @@ def test_prepare_case_records(decided_application, settings):
 
         want.append(document_record)
 
-    got = _prepare_case_records(application)
+    got = _prepare_case_records(application, fake_summary)
 
     assert want == got
 
diff --git a/backend/benefit/applications/tests/test_ahjo_requests.py b/backend/benefit/applications/tests/test_ahjo_requests.py
index a9c9801cf0..af60b1bc95 100644
--- a/backend/benefit/applications/tests/test_ahjo_requests.py
+++ b/backend/benefit/applications/tests/test_ahjo_requests.py
@@ -64,7 +64,6 @@ def test_send_request_to_ahjo(
     request_url,
     ahjo_status,
     application_with_ahjo_case_id,
-    ahjo_open_case_payload,
 ):
     headers = {"Authorization": "Bearer test"}
 
@@ -74,7 +73,7 @@ def test_send_request_to_ahjo(
         elif request_type == AhjoRequestType.DELETE_APPLICATION:
             m.delete(request_url)
         send_request_to_ahjo(
-            request_type, headers, application_with_ahjo_case_id, ahjo_open_case_payload
+            request_type, headers, application_with_ahjo_case_id, {"foo": "bar"}
         )
         assert m.called