diff --git a/src/controllers/syncController.ts b/src/controllers/syncController.ts
index fdb7e8c..5c25332 100644
--- a/src/controllers/syncController.ts
+++ b/src/controllers/syncController.ts
@@ -143,10 +143,19 @@ async function processDatabaseSync(database: any) {
       });
 
       for (const op of ops) {
+        const removeSpace = (string: string) => {
+          return string
+            .replace(
+              /[\s\u00A0\u1680\u2000-\u200F\u2028\u2029\u202F\u205F\u3000\uFEFF]/g,
+              " "
+            )
+            .replace(/\s+/g, " ")
+            .trim();
+        };
         const existData = existingRecords.find(
           (record) =>
-            JSON.stringify(record.c_invoice_id) ===
-            JSON.stringify(op.c_invoice_id)
+            removeSpace(JSON.stringify(record.c_invoice_id)) ===
+            removeSpace(JSON.stringify(op.c_invoice_id))
         );
         const existingId = existData ? existData.id : null;
         if (existingId) {