diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/group.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/group.component.ts
index e539bb7c..9d7d6b7e 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/group.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/group.component.ts
@@ -376,13 +376,9 @@ export class GroupComponent implements OnInit, OnDestroy {
       }
 
       /** 수정불가 그룹 핸들링. */
-      if (
-        !!group &&
-        !!environment.customConfig &&
-        !!environment.customConfig.fixedGroupSeqs
-      ) {
+      if (!!group && !!environment.productConfig.CommonSetting.fixedGroupSeqs) {
         const fixedGroupSeqs: number[] =
-          environment.customConfig.fixedGroupSeqs;
+          environment.productConfig.CommonSetting.fixedGroupSeqs;
         if (!!fixedGroupSeqs && fixedGroupSeqs.length > 0) {
           if (fixedGroupSeqs.indexOf(group.seq) > -1) {
             return false;
@@ -442,12 +438,9 @@ export class GroupComponent implements OnInit, OnDestroy {
     }
 
     /** 수정불가 그룹 핸들링. */
-    if (
-      !!group &&
-      !!environment.customConfig &&
-      !!environment.customConfig.fixedGroupSeqs
-    ) {
-      const fixedGroupSeqs: number[] = environment.customConfig.fixedGroupSeqs;
+    if (!!group && !!environment.productConfig.CommonSetting.fixedGroupSeqs) {
+      const fixedGroupSeqs: number[] =
+        environment.productConfig.CommonSetting.fixedGroupSeqs;
       if (!!fixedGroupSeqs && fixedGroupSeqs.length > 0) {
         if (fixedGroupSeqs.indexOf(group.seq) > -1) {
           if (menuType === 'REMOVE_FROM_GROUP' || menuType === 'MOVE_BUDDY') {
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/group/select-group.dialog.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/group/select-group.dialog.component.ts
index e50d998a..9946a445 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/group/select-group.dialog.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/group/select-group.dialog.component.ts
@@ -71,11 +71,9 @@ export class SelectGroupDialogComponent implements OnInit {
       map(([buddyList, groupList]) => {
         /** 수정불가 그룹 */
         let fixedGroupSeqs: number[];
-        if (
-          !!environment.customConfig &&
-          !!environment.customConfig.fixedGroupSeqs
-        ) {
-          fixedGroupSeqs = environment.customConfig.fixedGroupSeqs;
+        if (!!environment.productConfig.CommonSetting.fixedGroupSeqs) {
+          fixedGroupSeqs =
+            environment.productConfig.CommonSetting.fixedGroupSeqs;
         }
 
         const groupBuddyList: {
diff --git a/projects/ucap-webmessenger-app/src/environments/environment.daesang.dev.ts b/projects/ucap-webmessenger-app/src/environments/environment.daesang.dev.ts
index 0bfade37..f964d1f0 100644
--- a/projects/ucap-webmessenger-app/src/environments/environment.daesang.dev.ts
+++ b/projects/ucap-webmessenger-app/src/environments/environment.daesang.dev.ts
@@ -68,6 +68,7 @@ export const environment: Environment = {
 
       useMyDeptGroup: true,
       myDeptGroupSeq: -5,
+      fixedGroupSeqs: [-5],
 
       useTimerRoom: false,
       timerRoomDefaultInterval: 24 * 60 * 60,
@@ -89,10 +90,7 @@ export const environment: Environment = {
       userKey: 'DaesangSSOProject',
       isBase64: 'N'
     },
-    appKey: '!@#$DAESANG%^&*',
-
-    /** 삭제,수정 불가 그룹 Seqs:number[] */
-    fixedGroupSeqs: [-5]
+    appKey: '!@#$DAESANG%^&*'
   },
 
   commonApiModuleConfig: {
diff --git a/projects/ucap-webmessenger-app/src/environments/environment.daesang.prod.ts b/projects/ucap-webmessenger-app/src/environments/environment.daesang.prod.ts
index 914ff1a1..1967e2ca 100644
--- a/projects/ucap-webmessenger-app/src/environments/environment.daesang.prod.ts
+++ b/projects/ucap-webmessenger-app/src/environments/environment.daesang.prod.ts
@@ -68,6 +68,7 @@ export const environment: Environment = {
 
       useMyDeptGroup: true,
       myDeptGroupSeq: -5,
+      fixedGroupSeqs: [-5],
 
       useTimerRoom: false,
       timerRoomDefaultInterval: 24 * 60 * 60,
@@ -89,10 +90,7 @@ export const environment: Environment = {
       userKey: 'DaesangSSOProject',
       isBase64: 'N'
     },
-    appKey: '!@#$DAESANG%^&*',
-
-    /** 삭제,수정 불가 그룹 Seqs:number[] */
-    fixedGroupSeqs: [-5]
+    appKey: '!@#$DAESANG%^&*'
   },
 
   commonApiModuleConfig: {
diff --git a/projects/ucap-webmessenger-app/src/environments/environment.dev.ts b/projects/ucap-webmessenger-app/src/environments/environment.dev.ts
index 175c70ee..26f38555 100644
--- a/projects/ucap-webmessenger-app/src/environments/environment.dev.ts
+++ b/projects/ucap-webmessenger-app/src/environments/environment.dev.ts
@@ -68,6 +68,7 @@ export const environment: Environment = {
 
       useMyDeptGroup: false,
       myDeptGroupSeq: -999,
+      fixedGroupSeqs: [],
 
       useTimerRoom: true,
       timerRoomDefaultInterval: 24 * 60 * 60,
@@ -85,10 +86,7 @@ export const environment: Environment = {
   },
 
   customConfig: {
-    appKey: '!@#$DAESANG%^&*',
-
-    /** 삭제,수정 불가 그룹 Seqs:number[] */
-    fixedGroupSeqs: []
+    appKey: '!@#$DAESANG%^&*'
   },
 
   commonApiModuleConfig: {
diff --git a/projects/ucap-webmessenger-app/src/environments/environment.prod.ts b/projects/ucap-webmessenger-app/src/environments/environment.prod.ts
index 0df1a924..083cd151 100644
--- a/projects/ucap-webmessenger-app/src/environments/environment.prod.ts
+++ b/projects/ucap-webmessenger-app/src/environments/environment.prod.ts
@@ -68,6 +68,7 @@ export const environment: Environment = {
 
       useMyDeptGroup: false,
       myDeptGroupSeq: -999,
+      fixedGroupSeqs: [],
 
       useTimerRoom: true,
       timerRoomDefaultInterval: 24 * 60 * 60,
@@ -85,10 +86,7 @@ export const environment: Environment = {
   },
 
   customConfig: {
-    appKey: '!@#$DAESANG%^&*',
-
-    /** 삭제,수정 불가 그룹 Seqs:number[] */
-    fixedGroupSeqs: []
+    appKey: '!@#$DAESANG%^&*'
   },
 
   commonApiModuleConfig: {
diff --git a/projects/ucap-webmessenger-app/src/environments/environment.type.ts b/projects/ucap-webmessenger-app/src/environments/environment.type.ts
index 0e93e851..68c7c595 100644
--- a/projects/ucap-webmessenger-app/src/environments/environment.type.ts
+++ b/projects/ucap-webmessenger-app/src/environments/environment.type.ts
@@ -71,6 +71,8 @@ export interface Environment {
       useMyDeptGroup: boolean;
       /** 소속부서(내부서) 고정 그룹 SEQ */
       myDeptGroupSeq: number;
+      /** 삭제,수정 불가 그룹 Seqs:number[] */
+      fixedGroupSeqs: number[];
 
       /** 타이머대화방 사용유무 */
       useTimerRoom: boolean;