diff --git a/frontend/src/pages/Settings.tsx b/frontend/src/pages/Settings.tsx
index 8259ea8..c6657d8 100644
--- a/frontend/src/pages/Settings.tsx
+++ b/frontend/src/pages/Settings.tsx
@@ -15,8 +15,9 @@ import {
   CircularProgress,
   Button,
   Chip,
+  TextField,
 } from '@mui/material';
-import { Settings as SettingsIcon, Notifications, Palette, Language, SettingsBrightness, LightMode, DarkMode, Widgets, Cloud, LinkOff, Forum } from '@mui/icons-material';
+import { Settings as SettingsIcon, Notifications, Palette, Language, SettingsBrightness, LightMode, DarkMode, Widgets, Cloud, LinkOff, Forum, Badge } from '@mui/icons-material';
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import DashboardLayout from '../components/dashboard/DashboardLayout';
 import { useThemeMode } from '../contexts/ThemeContext';
@@ -24,6 +25,8 @@ import { preferencesApi } from '../services/settings';
 import { WIDGETS, WidgetKey } from '../constants/widgets';
 import { nextcloudApi } from '../services/nextcloud';
 import { useNotification } from '../contexts/NotificationContext';
+import { useAuth } from '../contexts/AuthContext';
+import { membersService } from '../services/members';
 
 const POLL_INTERVAL = 2000;
 const POLL_TIMEOUT = 5 * 60 * 1000;
@@ -31,7 +34,35 @@ const POLL_TIMEOUT = 5 * 60 * 1000;
 function Settings() {
   const { themeMode, setThemeMode } = useThemeMode();
   const queryClient = useQueryClient();
-  const { showInfo } = useNotification();
+  const { showInfo, showSuccess, showError } = useNotification();
+  const { user } = useAuth();
+
+  // FDISK Standesbuchnummer
+  const [standesNr, setStandesNr] = useState('');
+  const [standesNrEdited, setStandesNrEdited] = useState(false);
+
+  const { data: memberProfile, isLoading: profileLoading } = useQuery({
+    queryKey: ['member', user?.id],
+    queryFn: () => membersService.getMember(user!.id),
+    enabled: !!user?.id,
+  });
+
+  useEffect(() => {
+    if (memberProfile?.profile?.fdisk_standesbuch_nr != null) {
+      setStandesNr(memberProfile.profile.fdisk_standesbuch_nr);
+    }
+  }, [memberProfile]);
+
+  const standesNrMutation = useMutation({
+    mutationFn: (value: string) =>
+      membersService.updateMember(user!.id, { fdisk_standesbuch_nr: value || undefined }),
+    onSuccess: () => {
+      showSuccess('Standesbuchnummer gespeichert');
+      setStandesNrEdited(false);
+      queryClient.invalidateQueries({ queryKey: ['member', user?.id] });
+    },
+    onError: () => showError('Speichern fehlgeschlagen'),
+  });
 
   const { data: preferences, isLoading: prefsLoading } = useQuery({
     queryKey: ['user-preferences'],
@@ -251,6 +282,49 @@ function Settings() {
             </Card>
           </Grid>
 
+          {/* FDISK-Profil */}
+          <Grid item xs={12} md={6}>
+            <Card>
+              <CardContent>
+                <Box sx={{ display: 'flex', alignItems: 'center', mb: 2 }}>
+                  <Badge color="primary" sx={{ mr: 2 }} />
+                  <Typography variant="h6">FDISK-Profil</Typography>
+                </Box>
+                <Divider sx={{ mb: 2 }} />
+                <Typography variant="body2" color="text.secondary" sx={{ mb: 2 }}>
+                  Die Standesbuchnummer wird für die automatische FDISK-Synchronisation verwendet.
+                </Typography>
+                {profileLoading ? (
+                  <Box sx={{ display: 'flex', justifyContent: 'center', py: 1 }}>
+                    <CircularProgress size={24} />
+                  </Box>
+                ) : (
+                  <Box sx={{ display: 'flex', gap: 1, alignItems: 'center' }}>
+                    <TextField
+                      label="Standesbuchnummer"
+                      size="small"
+                      value={standesNr}
+                      onChange={(e) => {
+                        setStandesNr(e.target.value);
+                        setStandesNrEdited(true);
+                      }}
+                      placeholder="z.B. 123456"
+                      sx={{ flex: 1 }}
+                    />
+                    <Button
+                      variant="outlined"
+                      size="small"
+                      disabled={!standesNrEdited || standesNrMutation.isPending}
+                      onClick={() => standesNrMutation.mutate(standesNr)}
+                    >
+                      Speichern
+                    </Button>
+                  </Box>
+                )}
+              </CardContent>
+            </Card>
+          </Grid>
+
           {/* Notification Settings */}
           <Grid item xs={12} md={6}>
             <Card>
diff --git a/sync/src/db.ts b/sync/src/db.ts
index b3efa8e..7a8def4 100644
--- a/sync/src/db.ts
+++ b/sync/src/db.ts
@@ -171,9 +171,10 @@ export async function syncToDatabase(
           `UPDATE mitglieder_profile SET updated_at = NOW() WHERE user_id = $1`,
           [userId]
         );
-        log(`Forced update ${member.vorname} ${member.zuname} (${member.standesbuchNr}): no changes, timestamp refreshed`);
+        log(`Forced ${member.vorname} ${member.zuname} (${member.standesbuchNr}): ${member.status}, ${dienstgrad ?? member.dienstgrad}, Eintritt ${member.eintrittsdatum ?? '—'}`);
         forced++;
       } else {
+        log(`OK ${member.vorname} ${member.zuname} (${member.standesbuchNr}): ${member.status}, ${dienstgrad ?? member.dienstgrad}, Eintritt ${member.eintrittsdatum ?? '—'}`);
         unchanged++;
       }
     }
@@ -218,6 +219,7 @@ export async function syncToDatabase(
         log(`New Ausbildung: ${ausb.standesbuchNr} — ${ausb.kursname}${ausb.kursDatum ? ` (${ausb.kursDatum})` : ''}`);
         ausbildungNew++;
       } else {
+        log(`Updated Ausbildung: ${ausb.standesbuchNr} — ${ausb.kursname}${ausb.kursDatum ? ` (${ausb.kursDatum})` : ''}`);
         ausbildungUpdated++;
       }
     }