diff --git a/app/Filament/Imports/PanelGrMasterImporter.php b/app/Filament/Imports/PanelGrMasterImporter.php
index 9595606..ea66d43 100644
--- a/app/Filament/Imports/PanelGrMasterImporter.php
+++ b/app/Filament/Imports/PanelGrMasterImporter.php
@@ -116,11 +116,11 @@ class PanelGrMasterImporter extends Importer
             $warnMsg[] = 'Quantity must be greater than 0.';
         }
 
-        $existingRecord = PanelGrMaster::where('document_number', $this->data['document_number'])->where('plant_id', $this->data['plant'])->first();
+        $existingRecord = PanelGrMaster::where('document_number', $this->data['document_number'])->where('inspection_lot_number', $this->data['inspection_lot_number'])->where('plant_id', $this->data['plant'])->first();
 
-        if ($existingRecord && $existingRecord->invoice_number != $this->data['invoice_number'])
+        if ($existingRecord)
         {
-            $warnMsg[] = "Document Number '{$this->data['document_number']}' is already associated with Invoice Number '{$existingRecord->invoice_number}'.";
+            $warnMsg[] = "Document Number '{$this->data['document_number']}' is already associated with Inspection Lot Number '{$existingRecord->inspection_lot_number}'.";
         }
 
         if (! empty($warnMsg)) {