diff --git a/src/main/java/com/vmis/interfaceapp/config/ApiConstant.java b/src/main/java/com/vmis/interfaceapp/config/ApiConstant.java
index 3c25b1e..a2b3c86 100644
--- a/src/main/java/com/vmis/interfaceapp/config/ApiConstant.java
+++ b/src/main/java/com/vmis/interfaceapp/config/ApiConstant.java
@@ -18,12 +18,18 @@ public class ApiConstant {
      * <p>외부 API 호출이 정상적으로 처리되었음을 나타냅니다.</p>
      */
     public static final String CNTC_RESULT_CODE_SUCCESS = "00";
+    
+    /**
+     * 연계 결과 코드: 정보 없음
+     * <p>외부 API 호출이 정상적으로 처리되었으나 정보없음을 나타냅니다.</p>
+     */
+    public static final String CNTC_RESULT_CODE_NO_DATA = "99";
 
     /**
      * 연계 결과 코드: 에러
      * <p>외부 API 호출 중 에러가 발생했음을 나타냅니다.</p>
      */
-    public static final String CNTC_RESULT_CODE_ERROR = "99";
+    public static final String CNTC_RESULT_CODE_ERROR = "ERROR";
 
     // ===== 시스템 상수 =====
 
diff --git a/src/main/java/com/vmis/interfaceapp/config/properties/VmisProperties.java b/src/main/java/com/vmis/interfaceapp/config/properties/VmisProperties.java
index 3042d2c..5eb8496 100644
--- a/src/main/java/com/vmis/interfaceapp/config/properties/VmisProperties.java
+++ b/src/main/java/com/vmis/interfaceapp/config/properties/VmisProperties.java
@@ -29,7 +29,7 @@ public class VmisProperties {
         /** INFO_SYS_IP */
         private String infoSysIp;
         /** 시군구코드 (SIGUNGU_CODE) */
-        private String regionCode;
+        private String sigunguCode;
         private String departmentCode;
         // 담당자 정보
         private String chargerId;
@@ -40,8 +40,8 @@ public class VmisProperties {
         public void setInfoSysId(String infoSysId) { this.infoSysId = infoSysId; }
         public String getInfoSysIp() { return infoSysIp; }
         public void setInfoSysIp(String infoSysIp) { this.infoSysIp = infoSysIp; }
-        public String getRegionCode() { return regionCode; }
-        public void setRegionCode(String regionCode) { this.regionCode = regionCode; }
+        public String getSigunguCode() { return sigunguCode; }
+        public void setSigunguCode(String sigunguCode) { this.sigunguCode = sigunguCode; }
         public String getDepartmentCode() { return departmentCode; }
         public void setDepartmentCode(String departmentCode) { this.departmentCode = departmentCode; }
         public String getChargerId() { return chargerId; }
diff --git a/src/main/java/com/vmis/interfaceapp/service/RequestEnricher.java b/src/main/java/com/vmis/interfaceapp/service/RequestEnricher.java
index 52c9645..d017952 100644
--- a/src/main/java/com/vmis/interfaceapp/service/RequestEnricher.java
+++ b/src/main/java/com/vmis/interfaceapp/service/RequestEnricher.java
@@ -33,14 +33,14 @@ public class RequestEnricher {
             if (req == null) continue;
             req.setInfoSysId(sys.getInfoSysId());
             req.setInfoSysIp(sys.getInfoSysIp());
-            req.setSigunguCode(sys.getRegionCode());
+            req.setSigunguCode(sys.getSigunguCode());
             req.setCntcInfoCode(cntc);
             req.setChargerId(sys.getChargerId());
             req.setChargerIp(sys.getChargerIp());
             req.setChargerNm(sys.getChargerNm());
         }
         log.debug("[ENRICH] basic: applied INFO_SYS_ID={}, INFO_SYS_IP={}, SIGUNGU_CODE={}, CNTC_INFO_CODE={}",
-                sys.getInfoSysId(), sys.getInfoSysIp(), sys.getRegionCode(), cntc);
+                sys.getInfoSysId(), sys.getInfoSysIp(), sys.getSigunguCode(), cntc);
     }
 
     public void enrichLedger(Envelope<LedgerRequest> envelope) {
@@ -51,13 +51,13 @@ public class RequestEnricher {
             if (req == null) continue;
             req.setInfoSysId(sys.getInfoSysId());
             req.setInfoSysIp(sys.getInfoSysIp());
-            req.setSigunguCode(sys.getRegionCode());
+            req.setSigunguCode(sys.getSigunguCode());
             req.setCntcInfoCode(cntc);
             req.setChargerId(sys.getChargerId());
             req.setChargerIp(sys.getChargerIp());
             req.setChargerNm(sys.getChargerNm());
         }
         log.debug("[ENRICH] ledger: applied INFO_SYS_ID={}, INFO_SYS_IP={}, SIGUNGU_CODE={}, CNTC_INFO_CODE={}",
-                sys.getInfoSysId(), sys.getInfoSysIp(), sys.getRegionCode(), cntc);
+                sys.getInfoSysId(), sys.getInfoSysIp(), sys.getSigunguCode(), cntc);
     }
 }
diff --git a/src/main/resources/application-dev.yml b/src/main/resources/application-dev.yml
index ee1dd50..f40b915 100644
--- a/src/main/resources/application-dev.yml
+++ b/src/main/resources/application-dev.yml
@@ -60,7 +60,7 @@ vmis:
   system:
     infoSysId: "41-345"
     infoSysIp: "105.19.10.135"
-    regionCode: "41460"
+    sigunguCode: "41460"
     departmentCode: ""
     chargerId: ""
     chargerIp: ""
diff --git a/src/main/resources/application-prd.yml b/src/main/resources/application-prd.yml
index 97430ce..b437f74 100644
--- a/src/main/resources/application-prd.yml
+++ b/src/main/resources/application-prd.yml
@@ -60,7 +60,7 @@ logging:
 vmis:
   system:
     infoSysId: "41-345"   # 운영 실제값으로 교체
-    regionCode: ""        # 운영 실제값
+    sigunguCode: ""        # 운영 실제값
     departmentCode: ""    # 운영 실제값
   gpki:
     enabled: "Y"