diff --git a/src/enums/cluster.enum.ts b/src/enums/cluster.enum.ts
index 37fb24f..398f655 100644
--- a/src/enums/cluster.enum.ts
+++ b/src/enums/cluster.enum.ts
@@ -3,6 +3,6 @@
  */
 enum Cluster {
   GAEPO = 'GAEPO',
-  SEOCHO = 'SEOCHO',
+  //SEOCHO = 'SEOCHO',
 }
 export default Cluster;
diff --git a/src/external/where42/dto/where42.response.dto.ts b/src/external/where42/dto/where42.response.dto.ts
index 2a40b1d..c6ae656 100644
--- a/src/external/where42/dto/where42.response.dto.ts
+++ b/src/external/where42/dto/where42.response.dto.ts
@@ -22,10 +22,4 @@ export class Where42ResponseDto {
     example: Cluster.GAEPO,
   })
   cluster: Cluster;
-
-  @ApiProperty({
-    description: '마지막으로 태깅한 시간',
-    type: Date,
-  })
-  tag_at: Date;
 }
diff --git a/src/external/where42/where42.service.ts b/src/external/where42/where42.service.ts
index 7192200..20dec18 100644
--- a/src/external/where42/where42.service.ts
+++ b/src/external/where42/where42.service.ts
@@ -7,12 +7,12 @@ import {
   Logger,
   Post,
 } from '@nestjs/common';
+import Cluster from 'src/enums/cluster.enum';
 import { ITagLogRepository } from 'src/tag-log/repository/interface/tag-log-repository.interface';
 import { IdLoginDto } from 'src/user/dto/id-login.dto';
 import { UserService } from 'src/user/user.service';
 import { Where42ResponseDto } from './dto/where42.response.dto';
 import { IDeviceInfoRepository } from './repository/interface/device-info.repository.interface';
-import Cluster from 'src/enums/cluster.enum';
 
 @Injectable()
 export class Where42Service {
@@ -56,13 +56,11 @@ export class Where42Service {
       login,
       inoutState: device.inoutState,
       cluster: device.cluster,
-      tag_at: last.tag_at,
     };
   }
 
   @Post('where42All')
   async where42All(@Body() logins: string[]): Promise<Where42ResponseDto[]> {
-    // todo: Where42ResponseDto의 inoutState, tag_at은 사라질 예정입니다.
     const res: Where42ResponseDto[] = [];
 
     const users = await this.userService.findUsersByLogins(logins);
@@ -103,8 +101,7 @@ export class Where42Service {
             res.push({
               login,
               inoutState: null,
-              cluster: Cluster.GAEPO,
-              tag_at: last.tag_at,
+              cluster: device.cluster,
             });
             return;
           }
@@ -112,8 +109,7 @@ export class Where42Service {
           res.push({
             login,
             inoutState: device.inoutState,
-            cluster: Cluster.GAEPO,
-            tag_at: last.tag_at,
+            cluster: device.cluster,
           });
         } catch (e) {
           this.logger.error(`정상적인 조회가 아님: ${login}`);
@@ -121,7 +117,6 @@ export class Where42Service {
             login,
             inoutState: null,
             cluster: Cluster.GAEPO,
-            tag_at: new Date(),
           });
         }
       }),