diff --git a/WebContent/jsp/onl/apim/portalorg/portalOrgManDetail.jsp b/WebContent/jsp/onl/apim/portalorg/portalOrgManDetail.jsp
index 1293fff..6212201 100644
--- a/WebContent/jsp/onl/apim/portalorg/portalOrgManDetail.jsp
+++ b/WebContent/jsp/onl/apim/portalorg/portalOrgManDetail.jsp
@@ -205,14 +205,11 @@
 
 			if (isDetail){
 				$("#title").append(" 수정")
-				$("#btn_modify").prop('disabled', true);
-				$("#btn_unmask").show();
 				buttonControl(true);
 			} else {
 				$("#title").append(" 등록")
 				$("#managerInfoSectionTitle").hide();
 				$("#btn_modify").html('<i class="material-icons">save</i> <%= localeMessage.getString("button.register") %></button>');
-				$("#btn_unmask").hide();
 				buttonControl(false);
 			}
 
@@ -397,69 +394,6 @@
 				downloadFile(fileId, '1');  // fileSn은 '1'로 가정
 			});
 
-			$("#btn_unmask").click(function () {
-				if (!isDetail) {
-					alert("등록된 정보만 마스킹 해제할 수 있습니다.");
-					return;
-				}
-
-				var reason = prompt("마스킹 해제 사유를 입력해 주세요");
-
-				if (reason != null && reason.trim() !== '') {
-					$.ajax({
-						type: "POST",
-						url: url,
-						dataType: "json",
-						data: {
-							cmd: "UNMASK",
-							id: key,
-							reason: reason  // reason 파라미터 추가
-						},
-						success: function (json) {
-							var portalOrgData = json.portalOrg;
-							var corporateManagerData = json.corporateManager;
-
-							// 마스킹 해제된 데이터를 화면에 반영
-							$("#orgName").val(portalOrgData.orgName);
-							$("#orgCode").val(portalOrgData.orgCode);
-							$("#compRegNo").val(portalOrgData.compRegNo);
-							$("#corpRegNo").val(portalOrgData.corpRegNo);
-							$("#ceoName").val(portalOrgData.ceoName);
-							$("#orgAddr").val(portalOrgData.orgAddr);
-							
-							$("#ipListBody").empty(); // 기존 IP 목록 삭제
-							if (portalOrgData.ipWhitelist) {
-								var ipList = portalOrgData.ipWhitelist.split(',');
-								ipList.forEach(function(ip, index) {
-									var trimmedIp = ip.trim();
-									if (trimmedIp) {
-										addIpToTable(trimmedIp, index + 1);
-									}
-								});
-								$("#ipWhitelist").val(portalOrgData.ipWhitelist);
-							}
-
-							if (corporateManagerData) {
-								$("#userName").text(corporateManagerData.userName);
-								$("#userStatusDescription").text(corporateManagerData.userStatusDescription);
-								$("#emailAddr").text(corporateManagerData.emailAddr);
-								$("#mobileNumber").text(corporateManagerData.mobileNumber);
-							}
-
-							// 마스킹 해제 성공 시 수정 버튼 활성화
-							$("#btn_modify").prop('disabled', false);
-							$("#btn_unmask").prop('disabled', true);  // 마스킹 해제 버튼 비활성화
-							alert("마스킹 해제가 완료되었습니다. 이제 데이터를 수정할 수 있습니다.");
-						},
-						error: function (e) {
-							alert("마스킹 해제 중 오류가 발생했습니다. " + e.responseText);
-						}
-					});
-				} else if (reason !== null) {
-					alert("마스킹 해제 사유를 입력해 주세요.");
-				}
-			});
-
 			$("#btn_modify").click(function(){
 				if (!checkRequired("ajaxForm")) return;
 
@@ -611,7 +545,6 @@
 	</div><!-- end content_top -->
 	<div class="content_middle">
 		<div class="search_wrap">
-			<button type="button" class="cssbtn" id="btn_unmask" level="W" status="DETAIL"><i class="material-icons">lock_open</i> 마스킹해제</button>
 			<button type="button" class="cssbtn" id="btn_modify" level="W" status="DETAIL,NEW"><i class="material-icons">save</i> <%= localeMessage.getString("button.modify") %></button>
 			<button type="button" class="cssbtn" id="btn_delete" level="W" status="DETAIL"><i class="material-icons">delete</i> <%= localeMessage.getString("button.delete") %></button>
 			<button type="button" class="cssbtn" id="btn_previous" level="R" status="DETAIL,NEW"><i class="material-icons">arrow_back</i> <%= localeMessage.getString("button.previous") %></button>
diff --git a/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManController.java b/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManController.java
index ae7d65f..809e32b 100644
--- a/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManController.java
+++ b/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManController.java
@@ -56,15 +56,6 @@ public class PortalOrgManController extends BaseAnnotationController {
         return ResponseEntity.ok(result);
     }
 
-    @PostMapping(value = "/onl/apim/portalorg/portalOrgMan.json", params = "cmd=UNMASK")
-    public ResponseEntity<Map<String, Object>> selectDetailUnmask(String id, String reason) {
-        if (StringUtils.isBlank(reason)) {
-            throw new BizException("마스킹 해제 사유를 입력해 주세요.");
-        }
-        Map<String, Object> result = portalOrgManService.selectDetailWithUsersUnmask(id);
-        return ResponseEntity.ok(result);
-    }
-
     @PostMapping(value = "/onl/apim/portalorg/portalOrgMan.json", params = "cmd=LIST_INIT_COMBO")
     public ResponseEntity<Map<String, Object>> initCombo() {
         List<ComboVo> approvalStatusList = comboService.getMonitoringCodeSortedBySeq("APPROVE_STATUS_CODE"); // 승인상태코드
diff --git a/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManService.java b/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManService.java
index c71da83..9ae21b7 100644
--- a/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManService.java
+++ b/src/main/java/com/eactive/eai/rms/onl/apim/portalorg/PortalOrgManService.java
@@ -172,25 +172,9 @@ public class PortalOrgManService extends BaseService {
     private PortalUserCorpManagerUI convertCorporateManagerToUIWithMaskOption(PortalUser corporateManager, boolean isMasked) {
         PortalUserCorpManagerUI ui = portalUserCorpManagerUIMapper.toVo(corporateManager);
 
-        if (ui != null && isMasked) {
-            if (StringUtils.isNotBlank(ui.getUserName())) {
-                ui.setUserName(MaskingUtils.maskName(ui.getUserName()));
-            }
-            if (StringUtils.isNotBlank(ui.getEmailAddr())) {
-                ui.setEmailAddr(MaskingUtils.maskEmailId(ui.getEmailAddr()));
-            }
-            if (StringUtils.isNotBlank(ui.getMobileNumber())) {
-                ui.setMobileNumber(MaskingUtils.maskPhoneNumber(ui.getMobileNumber()));
-            }
-        }
-
         return ui;
     }
 
-    public Map<String, Object> selectDetailWithUsersUnmask(String id) {
-        return getDetailWithUsers(id, false);
-    }
-
     private void setFileInfo(PortalOrg portalOrg, PortalOrgUI ui) {
         Optional.ofNullable(portalOrg.getCompRegFile())
                 .filter(StringUtils::isNotBlank)