app/Filament/Pages/BulkStickerPrinting.php

@@ -1122,14 +1122,14 @@ class BulkStickerPrinting extends Page implements HasForms
             }
         }
 
-        if (
-            $matchedMachineId === null ||
-            trim((string) $matchedMachineId) !== trim((string) $machineId)
-        ) {
+        $selectedMachineId = trim((string) $machineId);
+        $mappedMachineId = trim((string) $matchedMachineId);
+
+        if ($mappedMachineId === '' || $mappedMachineId !== $selectedMachineId) {
             Notification::make()
                 ->danger()
                 ->title('Machine Mapping Mismatch')
-                ->body("Selected machine '{$machineId}' does not match the machine mapped to the selected sticker.")
+                ->body("Selected machine '{$selectedMachineId}' does not match the mapped machine '{$mappedMachineId}'.")
                 ->send();
 
             return;