diff --git a/src/core/locale/de/LC_MESSAGES/django.po b/src/core/locale/de/LC_MESSAGES/django.po
index fc92843e22a39728c411c3cd6f234bfe1a12016b..92d67b13f59faa202d1044543d8423ce6b125e0b 100644
--- a/src/core/locale/de/LC_MESSAGES/django.po
+++ b/src/core/locale/de/LC_MESSAGES/django.po
@@ -790,6 +790,12 @@ msgstr "Konfiguration für die Karten, wie z.B. Art/Typ, Layer oder Startpositio
 msgid "Conference__map_config"
 msgstr "Karten"
 
+msgid "Conference__schedule_version__help"
+msgstr "Globale Versionsbezeichner für das Gesammt-Progamm in der Schedule.XML Schnittstelle"
+
+msgid "Conference__schedule_version"
+msgstr "Schedule Version"
+
 msgid "Conference__support_assembly_type"
 msgstr "min. eine Assembly-Art muss erlaubt sein"
 
@@ -1864,6 +1870,12 @@ msgstr "Zeitpunkt des letzten erfolgreichen Imports"
 msgid "ScheduleSource__last_import"
 msgstr "letzter Import"
 
+msgid "ScheduleSource__version__help"
+msgstr "Version des letzten erfolgreichen Imports"
+
+msgid "ScheduleSource__version"
+msgstr "Quellversion"
+
 msgid "unknown"
 msgstr "unbekannt"
 
diff --git a/src/core/locale/en/LC_MESSAGES/django.po b/src/core/locale/en/LC_MESSAGES/django.po
index dfb63b7f47bd35718e8786de74692374e07c9742..ef4cf8ce5df2b178c0a3464f7a232b003f54c41a 100644
--- a/src/core/locale/en/LC_MESSAGES/django.po
+++ b/src/core/locale/en/LC_MESSAGES/django.po
@@ -790,6 +790,12 @@ msgstr "configuration for the maps used, e.g. type, layers and initial position/
 msgid "Conference__map_config"
 msgstr "maps"
 
+msgid "Conference__schedule_version__help"
+msgstr "Global version identifier for the overall Schedule.XML API"
+
+msgid "Conference__schedule_version"
+msgstr "Schedule version"
+
 msgid "Conference__support_assembly_type"
 msgstr "at least one of the assembly types must be supported"
 
@@ -1862,6 +1868,12 @@ msgstr "timestamp of the last successful import"
 msgid "ScheduleSource__last_import"
 msgstr "last import"
 
+msgid "ScheduleSource__version__help"
+msgstr "version of the last successful import"
+
+msgid "ScheduleSource__version"
+msgstr "source version"
+
 msgid "unknown"
 msgstr "unknown"
 
diff --git a/src/core/migrations/0166_schedulesource_last_import_version.py b/src/core/migrations/0166_schedulesource_last_import_version.py
new file mode 100644
index 0000000000000000000000000000000000000000..55f1eb85579c2ca4ccb14ceced20dd2cfa680cc7
--- /dev/null
+++ b/src/core/migrations/0166_schedulesource_last_import_version.py
@@ -0,0 +1,22 @@
+# Generated by Django 5.1.3 on 2024-12-17 19:27
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("core", "0165_alter_eventparticipant_options_and_more"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="schedulesource",
+            name="last_import_version",
+            field=models.TextField(
+                blank=True,
+                help_text="ScheduleSource__version__help",
+                null=True,
+                verbose_name="ScheduleSource__version",
+            ),
+        ),
+    ]
diff --git a/src/core/migrations/0167_conference_schedule_version.py b/src/core/migrations/0167_conference_schedule_version.py
new file mode 100644
index 0000000000000000000000000000000000000000..8bfc199ea3d010e4c5d76e81c86ab3390140df76
--- /dev/null
+++ b/src/core/migrations/0167_conference_schedule_version.py
@@ -0,0 +1,22 @@
+# Generated by Django 5.1.3 on 2024-12-17 19:36
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("core", "0166_schedulesource_last_import_version"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="conference",
+            name="schedule_version",
+            field=models.TextField(
+                blank=True,
+                help_text="Conference__schedule_version__help",
+                null=True,
+                verbose_name="Conference__schedule_version",
+            ),
+        ),
+    ]
diff --git a/src/core/models/conference.py b/src/core/models/conference.py
index 02c7c5393dc9d8c22720afd1f4cd164fc07b7675..fb40255e7b5ce9631dbc2e2d33d50c4b04ffb1ca 100644
--- a/src/core/models/conference.py
+++ b/src/core/models/conference.py
@@ -361,6 +361,13 @@ class Conference(models.Model):
     Konfiguration für die eingebundene Karten wie z. B. Typ, Startposition/-bereich, verfügbare/angezeigte Layer, etc.
     """
 
+    schedule_version = models.TextField(
+        blank=True,
+        null=True,
+        help_text=_('Conference__schedule_version__help'),
+        verbose_name=_('Conference__schedule_version'),
+    )
+
     def clean(self):
         super().clean()
 
diff --git a/src/core/models/schedules.py b/src/core/models/schedules.py
index aed616a497c2659faa6e4b1bf292f6dd723c06bc..b1d397851ef3f448679e53b286eb12b994de5e7e 100644
--- a/src/core/models/schedules.py
+++ b/src/core/models/schedules.py
@@ -71,6 +71,12 @@ class ScheduleSource(models.Model):
         help_text=_('ScheduleSource__last_import__help'),
         verbose_name=_('ScheduleSource__last_import'),
     )
+    last_import_version = models.TextField(
+        blank=True,
+        null=True,
+        help_text=_('ScheduleSource__version__help'),
+        verbose_name=_('ScheduleSource__version'),
+    )
 
     def __str__(self):
         return f'{self.import_type}{{{self.import_url_masked}}}'