diff --git a/database/models/universign.py b/database/models/universign.py
index 62e3b47..52ac092 100644
--- a/database/models/universign.py
+++ b/database/models/universign.py
@@ -29,10 +29,14 @@ class UniversignTransactionStatus(str, Enum):
 
 class UniversignSignerStatus(str, Enum):
     WAITING = "waiting"
+    OPEN = "open"
     VIEWED = "viewed"
     SIGNED = "signed"
+    COMPLETED = "completed"
     REFUSED = "refused"
     EXPIRED = "expired"
+    STALLED = "stalled"
+    UNKNOWN = "unknown"
 
 
 class LocalDocumentStatus(str, Enum):
diff --git a/services/universign_sync.py b/services/universign_sync.py
index 83fec08..11f30dd 100644
--- a/services/universign_sync.py
+++ b/services/universign_sync.py
@@ -251,46 +251,38 @@ class UniversignSyncService:
         transaction: UniversignTransaction,
         universign_data: Dict,
     ):
-        """
-        CORRECTION : Synchronise les signataires sans perdre les données locales
-        """
-        # Récupérer les participants depuis différents endroits possibles
         signers_data = universign_data.get("participants", [])
         if not signers_data:
             signers_data = universign_data.get("signers", [])
 
-        # ⚠️ IMPORTANT : Ne pas toucher aux signers si Universign n'en retourne pas
         if not signers_data:
-            logger.debug(
-                "Aucun signataire dans les données Universign, conservation des données locales"
-            )
+            logger.debug("Aucun signataire dans les données Universign")
             return
 
-        # Créer un mapping email -> signer existant
         existing_signers = {s.email: s for s in transaction.signers}
 
         for idx, signer_data in enumerate(signers_data):
             email = signer_data.get("email", "")
-
             if not email:
                 logger.warning(f"Signataire sans email à l'index {idx}, ignoré")
                 continue
 
+            # ✅ PROTECTION : gérer les statuts inconnus
+            raw_status = signer_data.get("status") or signer_data.get(
+                "state", "waiting"
+            )
+            try:
+                status = UniversignSignerStatus(raw_status)
+            except ValueError:
+                logger.warning(
+                    f"Statut inconnu pour signer {email}: {raw_status}, utilisation de 'unknown'"
+                )
+                status = UniversignSignerStatus.UNKNOWN
+
             if email in existing_signers:
-                # ✅ Mise à jour du signer existant (ne pas écraser si None)
                 signer = existing_signers[email]
+                signer.status = status
 
-                # Mise à jour du statut
-                new_status = signer_data.get("status") or signer_data.get("state")
-                if new_status:
-                    try:
-                        signer.status = UniversignSignerStatus(new_status)
-                    except ValueError:
-                        logger.warning(
-                            f"Statut inconnu pour signer {email}: {new_status}"
-                        )
-
-                # Mise à jour des dates (ne pas écraser si déjà renseignées)
                 viewed_at = self._parse_date(signer_data.get("viewed_at"))
                 if viewed_at and not signer.viewed_at:
                     signer.viewed_at = viewed_at
@@ -303,29 +295,26 @@ class UniversignSyncService:
                 if refused_at and not signer.refused_at:
                     signer.refused_at = refused_at
 
-                # Mise à jour du nom si manquant
                 if signer_data.get("name") and not signer.name:
                     signer.name = signer_data.get("name")
-
             else:
-                # ✅ Nouveau signer
+                # ✅ Nouveau signer avec gestion d'erreur intégrée
                 try:
-                    status = signer_data.get("status") or signer_data.get(
-                        "state", "waiting"
-                    )
                     signer = UniversignSigner(
                         id=f"{transaction.id}_signer_{idx}_{int(datetime.now().timestamp())}",
                         transaction_id=transaction.id,
                         email=email,
                         name=signer_data.get("name"),
-                        status=UniversignSignerStatus(status),
+                        status=status,
                         order_index=idx,
                         viewed_at=self._parse_date(signer_data.get("viewed_at")),
                         signed_at=self._parse_date(signer_data.get("signed_at")),
                         refused_at=self._parse_date(signer_data.get("refused_at")),
                     )
                     session.add(signer)
-                    logger.info(f"➕ Nouveau signataire ajouté: {email}")
+                    logger.info(
+                        f"➕ Nouveau signataire ajouté: {email} (statut: {status.value})"
+                    )
                 except Exception as e:
                     logger.error(f"Erreur création signer {email}: {e}")
 
@@ -534,15 +523,22 @@ class UniversignSyncService:
         self, session: AsyncSession, transaction: UniversignTransaction, new_status: str
     ):
         actions = get_status_actions(new_status)
-
         if not actions:
             return
 
-        if actions.get("update_sage_status"):
+        if actions.get("update_sage_status") and self.sage_client:
             await self._update_sage_status(transaction, new_status)
+        elif actions.get("update_sage_status"):
+            logger.debug(
+                f"sage_client non configuré, skip MAJ Sage pour {transaction.sage_document_id}"
+            )
 
-        if actions.get("send_notification"):
+        if actions.get("send_notification") and self.email_queue and self.settings:
             await self._send_notification(session, transaction, new_status)
+        elif actions.get("send_notification"):
+            logger.debug(
+                f"email_queue/settings non configuré, skip notification pour {transaction.transaction_id}"
+            )
 
     async def _update_sage_status(
         self, transaction: UniversignTransaction, status: str
diff --git a/utils/universign_status_mapping.py b/utils/universign_status_mapping.py
index 9040b2e..90bb383 100644
--- a/utils/universign_status_mapping.py
+++ b/utils/universign_status_mapping.py
@@ -1,4 +1,8 @@
 from typing import Dict, Any
+import logging
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
 
 UNIVERSIGN_TO_LOCAL: Dict[str, str] = {
     "draft": "EN_ATTENTE",
@@ -111,8 +115,17 @@ STATUS_MESSAGES: Dict[str, Dict[str, str]] = {
 
 
 def map_universign_to_local(universign_status: str) -> str:
-    """Convertit un statut Universign en statut local."""
-    return UNIVERSIGN_TO_LOCAL.get(universign_status.lower(), "ERREUR")
+    """Convertit un statut Universign en statut local avec fallback robuste."""
+    normalized = universign_status.lower().strip()
+    mapped = UNIVERSIGN_TO_LOCAL.get(normalized)
+
+    if not mapped:
+        logger.warning(
+            f"Statut Universign inconnu: '{universign_status}', mapping vers ERREUR"
+        )
+        return "ERREUR"
+
+    return mapped
 
 
 def get_sage_status_code(local_status: str) -> int: