diff --git a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/controller/SchedulesApiController.java b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/controller/SchedulesApiController.java
index 834b15b..fc43ef9 100644
--- a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/controller/SchedulesApiController.java
+++ b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/controller/SchedulesApiController.java
@@ -79,7 +79,7 @@ public class SchedulesApiController {
 		try {
 			resultVO = egovIndvdlSchdulManageService.createSchedule(resultVO, request, createScheduleVO);
 		} catch (Exception e) {
-			resultVO.setResultCode(-1);
+			resultVO.setResultCode(ResponseCode.FAILED.getCode());
 			resultVO.setResultMessage(e.getMessage());
 		}
 
@@ -119,7 +119,7 @@ public class SchedulesApiController {
 		try {
 			resultVO = egovIndvdlSchdulManageService.updateSchedule(resultVO, request, updateScheduleVO);
 		} catch (Exception e) {
-			resultVO.setResultCode(-1);
+			resultVO.setResultCode(ResponseCode.FAILED.getCode());
 			resultVO.setResultMessage(e.getMessage());
 		}
 
@@ -159,7 +159,7 @@ public class SchedulesApiController {
 		try {
 			resultVO = egovIndvdlSchdulManageService.deleteSchedule(resultVO, request, test);
 		} catch (Exception e) {
-			resultVO.setResultCode(-1);
+			resultVO.setResultCode(ResponseCode.FAILED.getCode());
 			resultVO.setResultMessage(e.getMessage());
 		}
 
@@ -198,7 +198,7 @@ public class SchedulesApiController {
 		try {
 			resultVO = egovIndvdlSchdulManageService.scheduleDetail(resultVO, request, user, scheduleId);
 		} catch (Exception e) {
-			resultVO.setResultCode(-1);
+			resultVO.setResultCode(ResponseCode.FAILED.getCode());
 			resultVO.setResultMessage(e.getMessage());
 		}
 
@@ -244,7 +244,7 @@ public class SchedulesApiController {
 		try {
 			resultVO = egovIndvdlSchdulManageService.scheduleMonth(resultVO, request, user, commandMap);
 		} catch (Exception e) {
-			resultVO.setResultCode(-1);
+			resultVO.setResultCode(ResponseCode.FAILED.getCode());
 			resultVO.setResultMessage(e.getMessage());
 		}
 
diff --git a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/impl/EgovIndvdlSchdulManageServiceImpl.java b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/impl/EgovIndvdlSchdulManageServiceImpl.java
index 33e9708..6615139 100644
--- a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/impl/EgovIndvdlSchdulManageServiceImpl.java
+++ b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/admin/committee/schedules/service/impl/EgovIndvdlSchdulManageServiceImpl.java
@@ -122,6 +122,11 @@ public class EgovIndvdlSchdulManageServiceImpl extends EgovAbstractServiceImpl i
 			"\n--------------------------------------------------------------\n"
 		);
 
+		// 유효성 검사 실시
+		if( Long.parseLong(createScheduleVO.getStartDate()) > Long.parseLong(createScheduleVO.getEndDate()) ) {
+			throw new Exception("종료일시는 시작일시보다 앞 설 수 없습니다.");
+		}
+
 
 		Map<String, Object> response = tnCmtEventRepository.spAddTnCmtEvent(
 				createScheduleVO.getDivMeet(),			// 구분
@@ -162,6 +167,16 @@ public class EgovIndvdlSchdulManageServiceImpl extends EgovAbstractServiceImpl i
 						"\n--------------------------------------------------------------\n"
 		);
 
+		// 유효성 검사 실시
+		int isValid = tnCmtEventRepository.sp_is_valid_tn_cmt_event_id( updateScheduleVO.getEvtSeq() );
+
+		if( isValid == 0 ) {
+			throw new Exception("대상이 존재하지 않습니다.");
+		}
+
+		if( Long.parseLong(updateScheduleVO.getStartDate()) > Long.parseLong(updateScheduleVO.getEndDate()) ) {
+			throw new Exception("종료일시는 시작일시보다 앞 설 수 없습니다.");
+		}
 
 		Map<String, Object> response = tnCmtEventRepository.spUpdateTnCmtEvent(
 			updateScheduleVO.getEvtSeq(),
diff --git a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/commonCode/repository/TnCmtEventRepository.java b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/commonCode/repository/TnCmtEventRepository.java
index 874ee0d..4c97345 100644
--- a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/commonCode/repository/TnCmtEventRepository.java
+++ b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/commonCode/repository/TnCmtEventRepository.java
@@ -27,11 +27,11 @@ public interface TnCmtEventRepository extends JpaRepository<TnCmtEvent, TnCmtEve
           ":_evt_contents, " +
           "TO_TIMESTAMP(" +
           "    :_evt_start_dt," +
-          "    'YYYY-MM-DD HH24:MI:SS'" +
+          "    'YYYYMMDDHH24MISS'" +
           ")::::timestamptz AT TIME ZONE 'UTC', " +
           "TO_TIMESTAMP(" +
           "    :_evt_end_dt," +
-          "    'YYYY-MM-DD HH24:MI:SS'" +
+          "    'YYYYMMDDHH24MISS'" +
           ")::::timestamptz AT TIME ZONE 'UTC', " +
           ":_modi_id, " +
           ":_evt_seq, " +
@@ -66,11 +66,11 @@ public interface TnCmtEventRepository extends JpaRepository<TnCmtEvent, TnCmtEve
           ":_evt_contents, " +
           "TO_TIMESTAMP(" +
           "    :_evt_start_dt," +
-          "    'YYYY-MM-DD HH24:MI:SS'" +
+          "    'YYYYMMDDHH24MISS'" +
           ")::::timestamptz AT TIME ZONE 'UTC', " +
           "TO_TIMESTAMP(" +
           "    :_evt_end_dt," +
-          "    'YYYY-MM-DD HH24:MI:SS'" +
+          "    'YYYYMMDDHH24MISS'" +
           ")::::timestamptz AT TIME ZONE 'UTC', " +
           ":_modi_id, " +
           ":_result_count, " +