diff --git a/src/main/java/go/kr/project/carInspectionPenalty/registrationOm/service/impl/om_checker/TransferOmChecker.java b/src/main/java/go/kr/project/carInspectionPenalty/registrationOm/service/impl/om_checker/TransferOmChecker.java
index 3abaa61..99f9722 100644
--- a/src/main/java/go/kr/project/carInspectionPenalty/registrationOm/service/impl/om_checker/TransferOmChecker.java
+++ b/src/main/java/go/kr/project/carInspectionPenalty/registrationOm/service/impl/om_checker/TransferOmChecker.java
@@ -82,6 +82,7 @@ public class TransferOmChecker extends AbstractComparisonOmChecker {
             String step1RprsOwnrNm = step1Record.getRprsOwnrNm();  // 검사일 기준 소유자명
             String step1RprsvOwnrIdecno = step1Record.getRprsvOwnrIdecno(); // 검사일 기준 소유자 회원번호
             String step1UsgsrhldStdgCd = step1Record.getUsgsrhldStdgCd();  // 1단계 사용본거지법정동코드
+            String step1Vin = step1Record.getVin(); // 1단계 차대번호
 
             // 소유자명에 "상품용" 포함 여부 체크
             if (step1RprsOwnrNm != null && step1RprsOwnrNm.contains("상품용")) {
@@ -96,13 +97,13 @@ public class TransferOmChecker extends AbstractComparisonOmChecker {
             LocalDate step2Date = inspVldPrdEndDate.minusDays(90);
             String step2Ymd = step2Date.format(DATE_FORMATTER);
 
-            log.info("[이첩-미필] 2단계 API 호출 - 차량번호: {}, 부과일자: {}", vhclno, step2Ymd);
-            NewBasicRequest step2Request = createBasicRequest(vhclno, null, step2Ymd);
+            log.info("[이첩-미필] 2단계 API 호출 - 차대번호: {}, 부과일자: {}", step1Vin, step2Ymd);
+            NewBasicRequest step2Request = createBasicRequest(null, step1Vin, step2Ymd);
             NewBasicResponse step2Response = apiService.getBasicInfo(step2Request);
             bassMatterLogService.updateCarFfnlgTrgtIdByTxIdNewTx(step2Response, existingData.getCarFfnlgTrgtIncmpId());
 
             if (step2Response == null || step2Response.getRecord() == null || step2Response.getRecord().isEmpty()) {
-                log.warn("[이첩-미필] 2단계 응답 없음 - 차량번호: {}", vhclno);
+                log.warn("[이첩-미필] 2단계 응답 없음 - 차대번호: {}", step1Vin);
                 return null;
             }
 
@@ -118,16 +119,16 @@ public class TransferOmChecker extends AbstractComparisonOmChecker {
                 return null;
             }
 
-            // 3단계: 자동차기본정보(차량번호, 부과일자=오늘)
+            // 3단계: 자동차기본정보(차대번호, 부과일자=오늘)
             String step3Ymd = LocalDate.now().format(DATE_FORMATTER);
 
-            log.info("[이첩-미필] 3단계 API 호출 - 차량번호: {}, 부과일자: {}", vhclno, step3Ymd);
-            NewBasicRequest step3Request = createBasicRequest(vhclno, null, step3Ymd);
+            log.info("[이첩-미필] 3단계 API 호출 - 차대번호: {}, 부과일자: {}", step1Vin, step3Ymd);
+            NewBasicRequest step3Request = createBasicRequest(null, step1Vin, step3Ymd);
             NewBasicResponse step3Response = apiService.getBasicInfo(step3Request);
             bassMatterLogService.updateCarFfnlgTrgtIdByTxIdNewTx(step3Response, existingData.getCarFfnlgTrgtIncmpId());
 
             if (step3Response == null || step3Response.getRecord() == null || step3Response.getRecord().isEmpty()) {
-                log.warn("[이첩-미필] 3단계 응답 없음 - 차량번호: {}", vhclno);
+                log.warn("[이첩-미필] 3단계 응답 없음 - 차대번호: {}", step1Vin);
                 return null;
             }