diff --git a/src/main/java/cokr/xit/ci/api/domain/repository/NiceCiSymkeyMngRepository.java b/src/main/java/cokr/xit/ci/api/domain/repository/NiceCiSymkeyMngRepository.java
index be78ee8..6e6a793 100644
--- a/src/main/java/cokr/xit/ci/api/domain/repository/NiceCiSymkeyMngRepository.java
+++ b/src/main/java/cokr/xit/ci/api/domain/repository/NiceCiSymkeyMngRepository.java
@@ -3,9 +3,9 @@ package cokr.xit.ci.api.domain.repository;
 import cokr.xit.ci.api.domain.NiceCiSymkeyMng;
 import org.springframework.data.jpa.repository.JpaRepository;
 
-import java.util.Optional;
+import java.util.List;
 
 public interface NiceCiSymkeyMngRepository extends JpaRepository<NiceCiSymkeyMng, Long> {
 
-    Optional<NiceCiSymkeyMng> findByPubkey(String pubkey);
+    List<NiceCiSymkeyMng> findAllByPubkeyOrderByRegistDtDesc(String pubkey);
 }
diff --git a/src/main/java/cokr/xit/ci/api/service/support/NiceCiGenerator.java b/src/main/java/cokr/xit/ci/api/service/support/NiceCiGenerator.java
index 696c8b2..c39a93b 100644
--- a/src/main/java/cokr/xit/ci/api/service/support/NiceCiGenerator.java
+++ b/src/main/java/cokr/xit/ci/api/service/support/NiceCiGenerator.java
@@ -20,6 +20,7 @@ import org.springframework.stereotype.Component;
 
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
+import java.util.List;
 import java.util.Optional;
 
 @Log4j2
@@ -47,7 +48,7 @@ public class NiceCiGenerator {
     @Value("${contract.nice.ci.rest.api.ci}")
     private String API_CI;
 
-    public ResponseVO initialKey(){
+    public ResponseVO initialKey() {
 
         NiceCiApiExecutor executor = buildExecutor();
         try {
@@ -80,11 +81,12 @@ public class NiceCiGenerator {
                 dataBodySymkeyResp = SymmetricKey.getInstance().getData();
             } else {    //대칭키 상태가 유효하지 않으면...
                 //현재 대칭키 조회(by 공개키)
-                Optional<NiceCiSymkeyMng> niceCiSymkeyMng = niceCiSymkeyMngRepository.findByPubkey(pubkeyResponseVO.getResultInfo().getPublicKey());
+                List<NiceCiSymkeyMng> niceCiSymkeyMngs = niceCiSymkeyMngRepository.findAllByPubkeyOrderByRegistDtDesc(pubkeyResponseVO.getResultInfo().getPublicKey());
+                Optional<NiceCiSymkeyMng> niceCiSymkeyMng = Optional.ofNullable(niceCiSymkeyMngs == null || niceCiSymkeyMngs.isEmpty() ? null : niceCiSymkeyMngs.get(0));
 
                 //대칭키 유효기간만료일이 1일 이상 남았으면
                 if (niceCiSymkeyMng.isPresent()
-                        &&(Long.parseLong(niceCiSymkeyMng.get().getExpireDt()) > Long.parseLong(LocalDateTime.now().plusDays(1).format(DateTimeFormatter.ofPattern("yyyyMMddHHmmss")))) ) {
+                        && (Long.parseLong(niceCiSymkeyMng.get().getExpireDt()) > Long.parseLong(LocalDateTime.now().plusDays(1).format(DateTimeFormatter.ofPattern("yyyyMMddHHmmss"))))) {
                     dataBodySymkeyResp = mapper.readValue(niceCiSymkeyMng.get().getRespJsonData(), DataBodySymkeyResp.class);
 
                     //대칭키 싱글톤 객체 초기화
@@ -137,7 +139,7 @@ public class NiceCiGenerator {
         }
     }
 
-    private NiceCiApiExecutor buildExecutor(){
+    private NiceCiApiExecutor buildExecutor() {
         return NiceCiApiExecutor.builder()
                 .HOST(this.HOST)
                 .CLIENT_ID(this.CLIENT_ID)