diff --git a/src/services/syncService.js b/src/services/syncService.js
index 684c2ca..3dc326b 100644
--- a/src/services/syncService.js
+++ b/src/services/syncService.js
@@ -117,8 +117,8 @@ class SyncService {
       for (const incomingNote of incomingNotes) {
         const permanentDelete = Boolean(incomingNote.permanentDelete);
 
-        if (!incomingNote.id || (!permanentDelete && (!incomingNote.title || !incomingNote.body))) {
-          throw new Error('Cada nota debe incluir id, title y body');
+        if (!incomingNote.id || typeof incomingNote.title !== 'string' || typeof incomingNote.body !== 'string') {
+          return res.status(400).json({ message: "Cada nota debe incluir id, title y body" });
         }
 
         const incomingBaseVersion = getIncomingVersion('nota', incomingNote);