diff --git a/app/Services/NaverService.php b/app/Services/NaverService.php
index 1bd3b26..f56712f 100644
--- a/app/Services/NaverService.php
+++ b/app/Services/NaverService.php
@@ -585,8 +585,8 @@ class NaverService
             'orgRepNm' => null,
             'smsSendTime' => null,
             'document_cert_method' => null,
-            'noRgbkVrfcReqYn' => ($address['isUnregisteredVerificationRequested'] === true) ? 'Y' : (($address['isUnregisteredVerificationRequested'] === false) ? 'N' : null),
-            'areaByBdbkVrfcReqYn' => ($address['isBuildingRegisterAreaCheckRequested'] === true) ? 'Y' : (($address['isBuildingRegisterAreaCheckRequested'] === false) ? 'N' : null),
+            'noRgbkVrfcReqYn' => ($address['isUnregisteredVerificationRequested'] ?? null) === true ? 'Y' : (($address['isUnregisteredVerificationRequested'] ?? null) === false ? 'N' : null),
+            'areaByBdbkVrfcReqYn' => ($address['isBuildingRegisterAreaCheckRequested'] ?? null) === true ? 'Y' : (($address['isBuildingRegisterAreaCheckRequested'] ?? null) === false ? 'N' : null),
             'orgAtclNo' => null,
             'atclStatCd' => null,
             'repNm' => $realtor['realtorName'] ?? null,