diff --git a/WebContent/jsp/onl/transaction/apim/apiInterfaceManDetail.jsp b/WebContent/jsp/onl/transaction/apim/apiInterfaceManDetail.jsp
index 62702a9..933edb2 100644
--- a/WebContent/jsp/onl/transaction/apim/apiInterfaceManDetail.jsp
+++ b/WebContent/jsp/onl/transaction/apim/apiInterfaceManDetail.jsp
@@ -510,6 +510,8 @@
 
                     $("#fromResponseAdapter").change();
                     $("#toResponseAdapter").change();
+
+                    $("#apiFullPath").val(data["apiFullPath"]); // 스펙 전달용 값
                 },
                 error:function(e){
                     alert(e.responseText);
@@ -931,7 +933,16 @@
 
         function showApiSpecPopup() {
             var eaiSvcName = getFullSvcName();
-            var args = {title:'API 스펙 관리', parent: true};
+            var eaiSvcDesc = $('#eaiSvcDesc').val();
+            var apipath = $('#apiFullPath').val();
+            var contentType = $('#contentType').val();
+            var args = {
+                    title:'API 스펙 관리',
+                    parent: true,
+                    apipath : apipath,
+                    eaiSvcDesc : eaiSvcDesc,
+                    contentType : contentType
+            };
             var popupUrl = url_spec + '?cmd=DETAIL&eaiSvcName=' + encodeURIComponent(eaiSvcName);
             showModal(popupUrl, args, 1200, 800);
         }
@@ -1503,6 +1514,7 @@
 									<label class="btn btn-outline-primary" for="btnTypeOutword"><i class="bi bi-arrow-left-circle"></i> 타발</label>
 								</div>
 							</div>
+							<input type="hidden" id="apiFullPath" value="">
                         </div>
                     </fieldset>
                 </div>
diff --git a/WebContent/jsp/onl/transaction/apim/apiSpecManPopup.jsp b/WebContent/jsp/onl/transaction/apim/apiSpecManPopup.jsp
index 1243177..f4f6154 100644
--- a/WebContent/jsp/onl/transaction/apim/apiSpecManPopup.jsp
+++ b/WebContent/jsp/onl/transaction/apim/apiSpecManPopup.jsp
@@ -36,6 +36,7 @@
             } else {
                 buttonControl(false);
             }
+
             initializeCodeMirror();
             initializeSummernote();
         }
@@ -97,6 +98,7 @@
 
         function detail(key) {
             // console.log('Before AJAX call, key:', key);  // Log the key before the AJAX call
+            debugger;
             $.ajax({
                 type: "POST",
                 url: url,
@@ -150,6 +152,37 @@
                     // console.log('After setting apiId, key:', key);  // Log the key after setting apiId
 
                     buttonControl(true);
+
+					// 조회된 Spec 데이터가 없다면 인터페이스 화면의 값을 세팅함.
+					if (!data.apiId) {
+	                    var args = window.dialogArguments;
+						
+						if (args && args.apipath) {
+							// HS04 의 fullpath 메서드/URL로 분리
+							var rawString = args.apipath;
+
+							var parts = rawString.split('|');
+
+							var method = parts[0].trim();
+							var url = parts[1].trim();
+							
+							if ($('#apiName').val() === "" && args.eaiSvcDesc) {
+								$('#apiName').val(args.eaiSvcDesc);
+							}
+
+							if ($('#apiUrl').val() === "" && url) {
+								$('#apiUrl').val(url);
+							}
+
+							if (method) {
+								$('#apiMethod').val(method);
+							}
+
+							if ($('#apiContentType').val() === "" && args.contentType) {
+								$('#apiContentType').val(method);
+							}
+						}
+					}
                 },
                 error: function (e) {
                     console.error('AJAX error:', e);  // Log any errors
diff --git a/src/main/java/com/eactive/eai/rms/onl/transaction/apim/ApiInterfaceService.java b/src/main/java/com/eactive/eai/rms/onl/transaction/apim/ApiInterfaceService.java
index 7bbb2b9..899b46b 100644
--- a/src/main/java/com/eactive/eai/rms/onl/transaction/apim/ApiInterfaceService.java
+++ b/src/main/java/com/eactive/eai/rms/onl/transaction/apim/ApiInterfaceService.java
@@ -248,6 +248,7 @@ public class ApiInterfaceService extends OnlBaseService {
             String stdKey = stdMessageUI.getBzwkSvcKeyName();
             String inboundRestPath = StringUtils.substringAfter(stdKey, STEMSG_SERVICE_URL_DELIMITER);
             apiInterfaceUI.setInboundRestPath(inboundRestPath);
+            apiInterfaceUI.setApiFullPath(standardMessageInfo.getApifullpath());
 
             apiInterfaceUI.setStandardMessageItems(stdMessageUI.getStandardMessageItems());