diff --git a/WebContent/jsp/onl/admin/authserver/clientManDetail.jsp b/WebContent/jsp/onl/admin/authserver/clientManDetail.jsp
index 90a9697..2eddc9a 100644
--- a/WebContent/jsp/onl/admin/authserver/clientManDetail.jsp
+++ b/WebContent/jsp/onl/admin/authserver/clientManDetail.jsp
@@ -293,21 +293,30 @@
                     }
 
                     var rows = $("#selectedApiGrid").jqGrid('getRowData');
-                    console.log(returnValue);
 
-                    const apiId = returnValue.apiId;
-                    var apiIdExists = rows.some(function (row) {
-                        return row.apiId === apiId;
-                    });
+                    var existingApiIds = new Set(rows.map(function(row) {
+                        return String(row.apiId);
+                    }));
+
+                    var newItems = Array.isArray(returnValue) ? returnValue : [returnValue];
 
-                    if (apiIdExists) {
-                        return;
-                    }
                     var ids = $("#selectedApiGrid").jqGrid('getDataIDs');
-                    var lastId = ids.length > 0 ? Math.max.apply(Math, ids) : 0;
-                    var newId = lastId + 1;
-                    $("#selectedApiGrid").jqGrid('addRowData', newId, returnValue, "last");
-                });
+                    var currentIdSeq = ids.length > 0 ? Math.max(...ids.map(Number)) : 0;
+
+                    $.each(newItems, function(index, item) {
+                        var checkId = String(item.apiId); 
+                        
+                        if (!existingApiIds.has(checkId)) {
+                            currentIdSeq++; 
+                            $("#selectedApiGrid").jqGrid('addRowData', currentIdSeq, item, "last");
+                            
+                            existingApiIds.add(checkId); 
+                        } else {
+                            //console.log("중복 제외됨: " + item.apiId);
+                        }
+                    });
+                alert("중복건 수를 제외한 API가 추가되었습니다.");
+	            });
             });
 
             $("#btn_popup_api_group").click(function () {