diff --git a/backend/src/main/java/moadong/club/controller/ClubProfileController.java b/backend/src/main/java/moadong/club/controller/ClubProfileController.java
index d15eb17c9..a2e499014 100644
--- a/backend/src/main/java/moadong/club/controller/ClubProfileController.java
+++ b/backend/src/main/java/moadong/club/controller/ClubProfileController.java
@@ -6,7 +6,7 @@
 import jakarta.servlet.http.HttpServletRequest;
 import lombok.AllArgsConstructor;
 import moadong.club.payload.request.ClubCreateRequest;
-import moadong.club.payload.request.ClubDescriptionUpdateRequest;
+import moadong.club.payload.request.ClubRecruitmentInfoUpdateRequest;
 import moadong.club.payload.request.ClubInfoRequest;
 import moadong.club.payload.response.ClubDetailedResponse;
 import moadong.club.service.ClubMetricService;
@@ -33,8 +33,7 @@ public class ClubProfileController {
             + "category는 분류(취미교양 등), division은 분과(중동 등)입니다.")
     @PreAuthorize("isAuthenticated()")
     @SecurityRequirement(name = "BearerAuth")
-    public ResponseEntity<?> createClub(@CurrentUser CustomUserDetails user,
-                                        @RequestBody ClubCreateRequest request) {
+    public ResponseEntity<?> createClub(@RequestBody ClubCreateRequest request) {
         String clubId = clubProfileService.createClub(request);
         return Response.ok("success create club", "clubId : " + clubId);
     }
@@ -60,8 +59,10 @@ public ResponseEntity<?> getClubDetail(
             + "introduction은 24글자 이내로 입력해야 합니다.")
     @PreAuthorize("isAuthenticated()")  // 인증 필요
     @SecurityRequirement(name = "BearerAuth")
-    public ResponseEntity<?> updateClubInfo(@RequestBody @Validated ClubInfoRequest request) {
-        clubProfileService.updateClubInfo(request);
+    public ResponseEntity<?> updateClubInfo(
+            @CurrentUser CustomUserDetails user,
+            @RequestBody @Validated ClubInfoRequest request) {
+        clubProfileService.updateClubInfo(request, user);
         return Response.ok("success update club");
     }
 
@@ -69,9 +70,10 @@ public ResponseEntity<?> updateClubInfo(@RequestBody @Validated ClubInfoRequest
     @Operation(summary = "클럽 모집정보 수정", description = "클럽의 모집정보 내용을 수정합니다.")
     @PreAuthorize("isAuthenticated()")
     @SecurityRequirement(name = "BearerAuth")
-    public ResponseEntity<?> updateClubDescription(
-            @RequestBody ClubDescriptionUpdateRequest request) {
-        clubProfileService.updateClubDescription(request);
+    public ResponseEntity<?> updateClubRecruitmentInfo(
+            @CurrentUser CustomUserDetails user,
+            @RequestBody ClubRecruitmentInfoUpdateRequest request) {
+        clubProfileService.updateClubRecruitmentInfo(request, user);
         return Response.ok("success update club");
     }
 }
diff --git a/backend/src/main/java/moadong/club/controller/ClubSearchController.java b/backend/src/main/java/moadong/club/controller/ClubSearchController.java
index 8863e2f4e..98de4b9d1 100644
--- a/backend/src/main/java/moadong/club/controller/ClubSearchController.java
+++ b/backend/src/main/java/moadong/club/controller/ClubSearchController.java
@@ -5,6 +5,8 @@
 import lombok.AllArgsConstructor;
 import moadong.club.payload.response.ClubSearchResponse;
 import moadong.club.service.ClubSearchService;
+import moadong.global.exception.ErrorCode;
+import moadong.global.exception.RestApiException;
 import moadong.global.payload.Response;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -29,15 +31,19 @@ public class ClubSearchController {
     public ResponseEntity<?> searchClubsByKeyword(
             @RequestParam(value = "keyword", required = false, defaultValue = "") String keyword,
             @RequestParam(value = "recruitmentStatus", required = false, defaultValue = "all") String recruitmentStatus,
-            @RequestParam(value = "category", required = false, defaultValue = "all") String category,
-            @RequestParam(value = "division", required = false, defaultValue = "all") String division
+            @RequestParam(value = "division", required = false, defaultValue = "all") String division,
+            @RequestParam(value = "category", required = false, defaultValue = "all") String category
     ) {
-        ClubSearchResponse clubSearchResponse = clubSearchService.searchClubsByKeyword(
-                keyword,
-                recruitmentStatus,
-                division,
-                category
-        );
-        return Response.ok(clubSearchResponse);
+        try {
+            ClubSearchResponse clubSearchResponse = clubSearchService.searchClubsByKeyword(
+                    keyword,
+                    recruitmentStatus,
+                    division,
+                    category
+            );
+            return Response.ok(clubSearchResponse);
+        } catch (Exception e) {
+            throw new RestApiException(ErrorCode.CLUB_SEARCH_FAILED);
+        }
     }
 }
diff --git a/backend/src/main/java/moadong/club/entity/Club.java b/backend/src/main/java/moadong/club/entity/Club.java
index d303d8ca0..53d39f179 100644
--- a/backend/src/main/java/moadong/club/entity/Club.java
+++ b/backend/src/main/java/moadong/club/entity/Club.java
@@ -10,7 +10,7 @@
 import lombok.Builder;
 import lombok.Getter;
 import moadong.club.enums.ClubState;
-import moadong.club.payload.request.ClubDescriptionUpdateRequest;
+import moadong.club.payload.request.ClubRecruitmentInfoUpdateRequest;
 import moadong.club.payload.request.ClubInfoRequest;
 import org.springframework.data.mongodb.core.mapping.Document;
 import org.springframework.data.mongodb.core.mapping.Field;
@@ -77,7 +77,7 @@ public void update(ClubInfoRequest request) {
         this.clubRecruitmentInformation.update(request);
     }
 
-    public void update(ClubDescriptionUpdateRequest request) {
+    public void update(ClubRecruitmentInfoUpdateRequest request) {
         clubRecruitmentInformation.updateDescription(request);
     }
 
diff --git a/backend/src/main/java/moadong/club/entity/ClubRecruitmentInformation.java b/backend/src/main/java/moadong/club/entity/ClubRecruitmentInformation.java
index 473f7db79..a5f6f0433 100644
--- a/backend/src/main/java/moadong/club/entity/ClubRecruitmentInformation.java
+++ b/backend/src/main/java/moadong/club/entity/ClubRecruitmentInformation.java
@@ -14,12 +14,11 @@
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Getter;
-import moadong.club.enums.RecruitmentStatus;
-import moadong.club.payload.request.ClubDescriptionUpdateRequest;
+import moadong.club.enums.ClubRecruitmentStatus;
+import moadong.club.payload.request.ClubRecruitmentInfoUpdateRequest;
 import moadong.club.payload.request.ClubInfoRequest;
 import moadong.global.RegexConstants;
 import org.checkerframework.common.aliasing.qual.Unique;
-import org.springframework.data.mongodb.core.mapping.Document;
 
 @AllArgsConstructor
 @Getter
@@ -57,7 +56,7 @@ public class ClubRecruitmentInformation {
 
     @Enumerated(EnumType.STRING)
     @NotNull
-    private RecruitmentStatus recruitmentStatus;
+    private ClubRecruitmentStatus clubRecruitmentStatus;
 
     private String recruitmentForm;
 
@@ -66,11 +65,11 @@ public ClubRecruitmentInformation updateLogo(String logo) {
         return this;
     }
 
-    public void updateRecruitmentStatus(RecruitmentStatus status) {
-        this.recruitmentStatus = status;
+    public void updateRecruitmentStatus(ClubRecruitmentStatus status) {
+        this.clubRecruitmentStatus = status;
     }
 
-    public void updateDescription(ClubDescriptionUpdateRequest request) {
+    public void updateDescription(ClubRecruitmentInfoUpdateRequest request) {
         this.description = request.description();
         this.recruitmentStart = request.recruitmentStart();
         this.recruitmentEnd = request.recruitmentEnd();
diff --git a/backend/src/main/java/moadong/club/enums/ClubCategory.java b/backend/src/main/java/moadong/club/enums/ClubCategory.java
index 1d6c9752d..ff060af18 100644
--- a/backend/src/main/java/moadong/club/enums/ClubCategory.java
+++ b/backend/src/main/java/moadong/club/enums/ClubCategory.java
@@ -1,5 +1,10 @@
 package moadong.club.enums;
 
+import lombok.Getter;
+
+import java.util.Arrays;
+
+@Getter
 public enum ClubCategory {
     //봉사,종교,취미교양,학술,운동,공연
     봉사(0),
@@ -16,17 +21,11 @@ public enum ClubCategory {
         this.priority = priority;
     }
 
-    public int getPriority() {
-        return priority;
-    }
-
     public static ClubCategory fromString(String category) {
-        for (ClubCategory c : values()) {
-            if (c.name().equals(category)) {
-                return c;
-            }
-        }
-        return null;
+        return Arrays.stream(values())
+                .filter(rs -> rs.name().equalsIgnoreCase(category))
+                .findFirst()
+                .orElse(null);
     }
     public static int getPriorityFromString(String category) {
         ClubCategory c = fromString(category);
diff --git a/backend/src/main/java/moadong/club/enums/RecruitmentStatus.java b/backend/src/main/java/moadong/club/enums/ClubRecruitmentStatus.java
similarity index 65%
rename from backend/src/main/java/moadong/club/enums/RecruitmentStatus.java
rename to backend/src/main/java/moadong/club/enums/ClubRecruitmentStatus.java
index 54b973a13..6810c0c8f 100644
--- a/backend/src/main/java/moadong/club/enums/RecruitmentStatus.java
+++ b/backend/src/main/java/moadong/club/enums/ClubRecruitmentStatus.java
@@ -1,8 +1,11 @@
 package moadong.club.enums;
 
+import lombok.Getter;
+
 import java.util.Arrays;
 
-public enum RecruitmentStatus {
+@Getter
+public enum ClubRecruitmentStatus {
     ALWAYS("상시모집", 1),
     OPEN("모집중", 2),
     CLOSED("모집마감", 3),
@@ -12,27 +15,19 @@ public enum RecruitmentStatus {
     private final String description;
     private final int priority;
 
-    RecruitmentStatus(String description, int priority) {
+    ClubRecruitmentStatus(String description, int priority) {
         this.description = description;
         this.priority = priority;
     }
 
-    public String getDescription() {
-        return description;
-    }
-
-    public int getPriority() {
-        return priority;
-    }
-
-    public static RecruitmentStatus fromString(String status) {
+    public static ClubRecruitmentStatus fromString(String status) {
         return Arrays.stream(values())
                 .filter(rs -> rs.name().equalsIgnoreCase(status))
                 .findFirst()
                 .orElse(null);
     }
     public static int getPriorityFromString(String status) {
-        RecruitmentStatus rs = fromString(status);
+        ClubRecruitmentStatus rs = fromString(status);
         return (rs != null) ? rs.getPriority() : Integer.MAX_VALUE;
     }
 }
diff --git a/backend/src/main/java/moadong/club/payload/dto/ClubDetailedResult.java b/backend/src/main/java/moadong/club/payload/dto/ClubDetailedResult.java
index a20fe417c..6f506e406 100644
--- a/backend/src/main/java/moadong/club/payload/dto/ClubDetailedResult.java
+++ b/backend/src/main/java/moadong/club/payload/dto/ClubDetailedResult.java
@@ -49,8 +49,8 @@ public static ClubDetailedResult of(Club club) {
                 .presidentPhoneNumber(clubRecruitmentInformation.getPresidentTelephoneNumber() == null ? "" : clubRecruitmentInformation.getPresidentTelephoneNumber())
                 .recruitmentPeriod(period)
                 .recruitmentTarget(clubRecruitmentInformation.getRecruitmentTarget() == null ? "" : clubRecruitmentInformation.getRecruitmentTarget())
-                .recruitmentStatus(clubRecruitmentInformation.getRecruitmentStatus() == null
-                        ? "" : clubRecruitmentInformation.getRecruitmentStatus().getDescription())
+                .recruitmentStatus(clubRecruitmentInformation.getClubRecruitmentStatus() == null
+                        ? "" : clubRecruitmentInformation.getClubRecruitmentStatus().getDescription())
                 .recruitmentForm(clubRecruitmentInformation.getRecruitmentForm() == null ? "" : clubRecruitmentInformation.getRecruitmentForm())
                 .build();
     }
diff --git a/backend/src/main/java/moadong/club/payload/request/ClubDescriptionUpdateRequest.java b/backend/src/main/java/moadong/club/payload/request/ClubDescriptionUpdateRequest.java
deleted file mode 100644
index f80b6c6ce..000000000
--- a/backend/src/main/java/moadong/club/payload/request/ClubDescriptionUpdateRequest.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package moadong.club.payload.request;
-
-import java.time.LocalDateTime;
-
-public record ClubDescriptionUpdateRequest(
-    String id,
-    LocalDateTime recruitmentStart,
-    LocalDateTime recruitmentEnd,
-    String recruitmentTarget,
-    String description
-) {
-
-}
diff --git a/backend/src/main/java/moadong/club/payload/request/ClubRecruitmentInfoUpdateRequest.java b/backend/src/main/java/moadong/club/payload/request/ClubRecruitmentInfoUpdateRequest.java
new file mode 100644
index 000000000..e610044ff
--- /dev/null
+++ b/backend/src/main/java/moadong/club/payload/request/ClubRecruitmentInfoUpdateRequest.java
@@ -0,0 +1,13 @@
+package moadong.club.payload.request;
+
+import java.time.LocalDateTime;
+
+public record ClubRecruitmentInfoUpdateRequest(
+        String id,
+        LocalDateTime recruitmentStart,
+        LocalDateTime recruitmentEnd,
+        String recruitmentTarget,
+        String description
+) {
+
+}
diff --git a/backend/src/main/java/moadong/club/service/ClubProfileService.java b/backend/src/main/java/moadong/club/service/ClubProfileService.java
index 2e83fd1d4..6640a1fa2 100644
--- a/backend/src/main/java/moadong/club/service/ClubProfileService.java
+++ b/backend/src/main/java/moadong/club/service/ClubProfileService.java
@@ -4,12 +4,14 @@
 import moadong.club.entity.Club;
 import moadong.club.payload.dto.ClubDetailedResult;
 import moadong.club.payload.request.ClubCreateRequest;
-import moadong.club.payload.request.ClubDescriptionUpdateRequest;
+import moadong.club.payload.request.ClubRecruitmentInfoUpdateRequest;
 import moadong.club.payload.request.ClubInfoRequest;
 import moadong.club.payload.response.ClubDetailedResponse;
 import moadong.club.repository.ClubRepository;
 import moadong.global.exception.ErrorCode;
 import moadong.global.exception.RestApiException;
+import moadong.global.util.ObjectIdConverter;
+import moadong.user.payload.CustomUserDetails;
 import org.bson.types.ObjectId;
 import org.springframework.stereotype.Service;
 
@@ -31,18 +33,16 @@ public String createClub(ClubCreateRequest request) {
         return club.getId();
     }
 
-    public void updateClubInfo(ClubInfoRequest request) {
-        Club club = clubRepository.findById(request.id())
-                .orElseThrow(() -> new RestApiException(ErrorCode.CLUB_NOT_FOUND));
+    public void updateClubInfo(ClubInfoRequest request, CustomUserDetails user) {
+        Club club = validateClubUpdateRequest(request.id(), user);
 
         club.update(request);
         clubRepository.save(club);
-
     }
 
-    public void updateClubDescription(ClubDescriptionUpdateRequest request) {
-        Club club = clubRepository.findById(request.id())
-                .orElseThrow(() -> new RestApiException(ErrorCode.CLUB_NOT_FOUND));
+    public void updateClubRecruitmentInfo(ClubRecruitmentInfoUpdateRequest request, CustomUserDetails user) {
+        Club club = validateClubUpdateRequest(request.id(), user);
+
         club.update(request);
         clubRepository.save(club);
 
@@ -54,7 +54,7 @@ public void updateClubDescription(ClubDescriptionUpdateRequest request) {
     }
 
     public ClubDetailedResponse getClubDetail(String clubId) {
-        ObjectId objectId = new ObjectId(clubId);
+        ObjectId objectId = ObjectIdConverter.convertString(clubId);
         Club club = clubRepository.findClubById(objectId)
                 .orElseThrow(() -> new RestApiException(ErrorCode.CLUB_NOT_FOUND));
 
@@ -63,4 +63,13 @@ public ClubDetailedResponse getClubDetail(String clubId) {
         );
         return new ClubDetailedResponse(clubDetailedResult);
     }
+
+    private Club validateClubUpdateRequest(String clubId, CustomUserDetails user){
+        Club club = clubRepository.findById(clubId)
+                .orElseThrow(() -> new RestApiException(ErrorCode.CLUB_NOT_FOUND));
+        if (!user.getId().equals(club.getUserId())){
+            throw new RestApiException(ErrorCode.USER_UNAUTHORIZED);
+        }
+        return club;
+    }
 }
diff --git a/backend/src/main/java/moadong/club/service/ClubSearchService.java b/backend/src/main/java/moadong/club/service/ClubSearchService.java
index aaddd0b36..62df39f43 100644
--- a/backend/src/main/java/moadong/club/service/ClubSearchService.java
+++ b/backend/src/main/java/moadong/club/service/ClubSearchService.java
@@ -2,7 +2,7 @@
 
 import lombok.AllArgsConstructor;
 import moadong.club.enums.ClubCategory;
-import moadong.club.enums.RecruitmentStatus;
+import moadong.club.enums.ClubRecruitmentStatus;
 import moadong.club.payload.dto.ClubSearchResult;
 import moadong.club.payload.response.ClubSearchResponse;
 import moadong.club.repository.ClubSearchRepository;
@@ -34,7 +34,7 @@ public ClubSearchResponse searchClubsByKeyword(String keyword,
                 .sorted(
                         //
                         Comparator
-                                .comparingInt((ClubSearchResult club) -> RecruitmentStatus.getPriorityFromString(club.recruitmentStatus()))
+                                .comparingInt((ClubSearchResult club) -> ClubRecruitmentStatus.getPriorityFromString(club.recruitmentStatus()))
                                 .thenComparingInt((ClubSearchResult club) -> ClubCategory.getPriorityFromString(club.category()))
                                 .thenComparing(ClubSearchResult::name)
                 )
diff --git a/backend/src/main/java/moadong/club/service/RecruitmentScheduler.java b/backend/src/main/java/moadong/club/service/RecruitmentScheduler.java
index 5cf108227..cd1e25d82 100644
--- a/backend/src/main/java/moadong/club/service/RecruitmentScheduler.java
+++ b/backend/src/main/java/moadong/club/service/RecruitmentScheduler.java
@@ -9,11 +9,11 @@
 import java.util.concurrent.ScheduledFuture;
 import lombok.RequiredArgsConstructor;
 import moadong.club.entity.Club;
-import moadong.club.entity.ClubRecruitmentInformation;
-import moadong.club.enums.RecruitmentStatus;
+import moadong.club.enums.ClubRecruitmentStatus;
 import moadong.club.repository.ClubRepository;
 import moadong.global.exception.ErrorCode;
 import moadong.global.exception.RestApiException;
+import moadong.global.util.ObjectIdConverter;
 import org.bson.types.ObjectId;
 import org.springframework.scheduling.TaskScheduler;
 import org.springframework.stereotype.Component;
@@ -33,12 +33,12 @@ public void scheduleRecruitment(String clubId, LocalDateTime startDate,
 
         // 모집 시작 스케줄링
         ScheduledFuture<?> startFuture = taskScheduler.schedule(
-            () -> updateRecruitmentStatus(clubId, RecruitmentStatus.OPEN),
+            () -> updateRecruitmentStatus(clubId, ClubRecruitmentStatus.OPEN),
             Date.from(startDate.atZone(ZoneId.systemDefault()).toInstant()));
 
         // 모집 종료 스케줄링
         ScheduledFuture<?> endFuture = taskScheduler.schedule(
-            () -> updateRecruitmentStatus(clubId, RecruitmentStatus.CLOSED),
+            () -> updateRecruitmentStatus(clubId, ClubRecruitmentStatus.CLOSED),
             Date.from(endDate.atZone(ZoneId.systemDefault()).toInstant()));
 
         scheduledTasks.put(clubId, startFuture);
@@ -53,8 +53,8 @@ public void cancelScheduledTask(String clubId) {
     }
 
     @Transactional
-    public void updateRecruitmentStatus(String clubId, RecruitmentStatus status) {
-        ObjectId objectId = new ObjectId(clubId);
+    public void updateRecruitmentStatus(String clubId, ClubRecruitmentStatus status) {
+        ObjectId objectId = ObjectIdConverter.convertString(clubId);
         Club club = clubRepository.findClubById(objectId)
                 .orElseThrow(() -> new RestApiException(ErrorCode.CLUB_NOT_FOUND));
 
diff --git a/backend/src/main/java/moadong/gcs/service/ClubImageService.java b/backend/src/main/java/moadong/gcs/service/ClubImageService.java
index 5b0b71d83..99f5c774b 100644
--- a/backend/src/main/java/moadong/gcs/service/ClubImageService.java
+++ b/backend/src/main/java/moadong/gcs/service/ClubImageService.java
@@ -12,6 +12,7 @@
 import moadong.gcs.domain.FileType;
 import moadong.global.exception.ErrorCode;
 import moadong.global.exception.RestApiException;
+import moadong.global.util.ObjectIdConverter;
 import moadong.global.util.RandomStringUtil;
 import org.bson.types.ObjectId;
 import org.springframework.beans.factory.annotation.Value;
@@ -32,7 +33,7 @@ public class ClubImageService {
 
 
     public String uploadLogo(String clubId, MultipartFile file) {
-        ObjectId objectId = new ObjectId(clubId);
+        ObjectId objectId = ObjectIdConverter.convertString(clubId);
         Club club = clubRepository.findClubById(objectId)
                 .orElseThrow(() -> new RestApiException(ErrorCode.CLUB_NOT_FOUND));
 
@@ -47,7 +48,7 @@ public String uploadLogo(String clubId, MultipartFile file) {
     }
 
     public void deleteLogo(String clubId) {
-        ObjectId objectId = new ObjectId(clubId);
+        ObjectId objectId = ObjectIdConverter.convertString(clubId);
         Club club = clubRepository.findClubById(objectId)
                 .orElseThrow(() -> new RestApiException(ErrorCode.CLUB_NOT_FOUND));
 
@@ -57,7 +58,7 @@ public void deleteLogo(String clubId) {
     }
 
     public String uploadFeed(String clubId, MultipartFile file) {
-        ObjectId objectId = new ObjectId(clubId);
+        ObjectId objectId = ObjectIdConverter.convertString(clubId);
         int feedImagesCount = clubRepository.findClubById(objectId)
                 .orElseThrow(() -> new RestApiException(ErrorCode.CLUB_NOT_FOUND))
                 .getClubRecruitmentInformation().getFeedImages().size();
@@ -69,7 +70,7 @@ public String uploadFeed(String clubId, MultipartFile file) {
     }
 
     public void updateFeeds(String clubId, List<String> newFeedImageList) {
-        ObjectId objectId = new ObjectId(clubId);
+        ObjectId objectId = ObjectIdConverter.convertString(clubId);
         Club club = clubRepository.findClubById(objectId)
                 .orElseThrow(() -> new RestApiException(ErrorCode.CLUB_NOT_FOUND));
 
diff --git a/backend/src/main/java/moadong/global/exception/ErrorCode.java b/backend/src/main/java/moadong/global/exception/ErrorCode.java
index 459fd92c1..f157b61cf 100644
--- a/backend/src/main/java/moadong/global/exception/ErrorCode.java
+++ b/backend/src/main/java/moadong/global/exception/ErrorCode.java
@@ -8,6 +8,8 @@ public enum ErrorCode {
     CLUB_NOT_FOUND(HttpStatus.NOT_FOUND, "600-1", "동아리가 존재하지 않습니다."),
     CLUB_INFORMATION_NOT_FOUND(HttpStatus.NOT_FOUND, "600-2", "동아리 상세 정보가 존재하지 않습니다."),
     CLUB_FEED_IMAGES_NOT_FOUND(HttpStatus.NOT_FOUND, "600-3", "동아리 피드가 존재하지 않습니다."),
+    CLUB_ID_INVALID(HttpStatus.BAD_REQUEST,"600-4","올바르지 않은 클럽 요청입니다."),
+    CLUB_SEARCH_FAILED(HttpStatus.BAD_REQUEST,"600-5","검색 중 오류가 발생했습니다."),
     IMAGE_UPLOAD_FAILED(HttpStatus.INTERNAL_SERVER_ERROR, "601-1", "이미지 업로드에 실패하였습니다."),
     FILE_NOT_FOUND(HttpStatus.NOT_FOUND, "601-2", "이미지 파일을 찾을 수 없습니다."),
     TOO_MANY_FILES(HttpStatus.PAYLOAD_TOO_LARGE, "601-3", "이미지 파일이 최대치보다 많습니다."),
@@ -17,6 +19,7 @@ public enum ErrorCode {
     USER_NOT_EXIST(HttpStatus.BAD_REQUEST, "700-2","존재하지 않는 계정입니다."),
     USER_INVALID_FORMAT(HttpStatus.BAD_REQUEST, "700-3","올바르지 않은 유저 형식입니다."),
     USER_INVALID_LOGIN(HttpStatus.BAD_REQUEST, "700-4","올바르지 않은 로그인"),
+    USER_UNAUTHORIZED(HttpStatus.FORBIDDEN, "700-5","권한이 없습니다."),
     TOKEN_INVALID(HttpStatus.UNAUTHORIZED, "701-1", "올바르지 않은 토큰 양식입니다."),
     TOKEN_EXPIRED(HttpStatus.UNAUTHORIZED, "701-2", "토큰이 만료되었습니다."),
     ;
diff --git a/backend/src/main/java/moadong/global/util/ObjectIdConverter.java b/backend/src/main/java/moadong/global/util/ObjectIdConverter.java
new file mode 100644
index 000000000..cc9755043
--- /dev/null
+++ b/backend/src/main/java/moadong/global/util/ObjectIdConverter.java
@@ -0,0 +1,17 @@
+package moadong.global.util;
+
+import moadong.global.exception.ErrorCode;
+import moadong.global.exception.RestApiException;
+import org.bson.types.ObjectId;
+
+public class ObjectIdConverter {
+    public static ObjectId convertString(String id){
+        ObjectId objectId;
+        try{
+            objectId = new ObjectId(id);
+        } catch (IllegalArgumentException e){
+            throw new RestApiException(ErrorCode.CLUB_ID_INVALID);
+        }
+        return objectId;
+    }
+}
diff --git a/backend/src/main/java/moadong/user/payload/CustomUserDetails.java b/backend/src/main/java/moadong/user/payload/CustomUserDetails.java
index 679eefc27..8fe6cce65 100644
--- a/backend/src/main/java/moadong/user/payload/CustomUserDetails.java
+++ b/backend/src/main/java/moadong/user/payload/CustomUserDetails.java
@@ -8,8 +8,9 @@
 
 @Getter
 public class CustomUserDetails implements UserDetails {
-
+    // 유저 다큐먼트 _id
     private String id;
+    // 로그인에 쓰는 유저 아이디
     private String userId;
     private String password;
     private Collection<? extends GrantedAuthority> authorities;