diff --git a/src/app/(modules)/ticket/[ticketId]/components/TicketOverviewCard.tsx b/src/app/(modules)/ticket/[ticketId]/components/TicketOverviewCard.tsx
index b4ed5b7..1643209 100644
--- a/src/app/(modules)/ticket/[ticketId]/components/TicketOverviewCard.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/components/TicketOverviewCard.tsx
@@ -90,8 +90,8 @@ export function TicketOverviewCard({ ticket }: { ticket: TicketDetail }) {
           </MetaValue>
         </OverviewField>
 
-        <OverviewField label="Chainage">
-          <MetaValue>{ticket.chainage_id || '-'}</MetaValue>
+        <OverviewField label="Chainage" >
+          <MetaValue>{ticket.chainage_name}</MetaValue>
         </OverviewField>
 
         <OverviewField label="Uploaded By">
diff --git a/src/app/(modules)/ticket/hooks/useTenantTicketTableEvents.ts b/src/app/(modules)/ticket/hooks/useTenantTicketTableEvents.ts
index a897bb0..c7413d5 100644
--- a/src/app/(modules)/ticket/hooks/useTenantTicketTableEvents.ts
+++ b/src/app/(modules)/ticket/hooks/useTenantTicketTableEvents.ts
@@ -88,7 +88,6 @@ function buildTicketListItem(
     !event.id ||
     !event.ticket_name ||
     !event.status ||
-    !event.default_defect_class ||
     event.detection_count === undefined ||
     !event.updated_at
   ) {
@@ -101,7 +100,7 @@ function buildTicketListItem(
     chainage_id: event.chainage_id ?? null,
     chainage_name: event.chainage_name ?? null,
     status: event.status,
-    default_defect_class: event.default_defect_class,
+    default_defect_class: event.default_defect_class ?? null,
     assigned_to_name: event.assigned_to_name ?? null,
     detection_count: event.detection_count,
     created_by_name: event.created_by_name ?? null,
diff --git a/src/app/(modules)/ticket/hooks/useTicketQueries.ts b/src/app/(modules)/ticket/hooks/useTicketQueries.ts
index 8224173..c6336b0 100644
--- a/src/app/(modules)/ticket/hooks/useTicketQueries.ts
+++ b/src/app/(modules)/ticket/hooks/useTicketQueries.ts
@@ -63,8 +63,8 @@ export function useTicketDetailQuery(
   return useQuery({
     queryKey: ticketKeys.detail(ticketId ?? '', defectClass),
     queryFn: () =>
-      ticketService.getTicketDetail(ticketId as string, defectClass as string),
-    enabled: Boolean(ticketId && defectClass),
+      ticketService.getTicketDetail(ticketId as string, defectClass),
+    enabled: Boolean(ticketId),
   });
 }
 
diff --git a/src/app/(modules)/ticket/page.tsx b/src/app/(modules)/ticket/page.tsx
index 1f6a5b7..7df18bd 100644
--- a/src/app/(modules)/ticket/page.tsx
+++ b/src/app/(modules)/ticket/page.tsx
@@ -44,9 +44,11 @@ export default function TicketPage() {
 
   const handleView = useCallback(
     (ticket: TicketListItem) => {
-      router.push(
-        `/ticket/${ticket.id}?defect_class=${encodeURIComponent(ticket.default_defect_class)}`,
-      );
+      const defectClassQuery = ticket.default_defect_class
+        ? `?defect_class=${encodeURIComponent(ticket.default_defect_class)}`
+        : '';
+
+      router.push(`/ticket/${ticket.id}${defectClassQuery}`);
     },
     [router],
   );
diff --git a/src/constants/apiRoutes.ts b/src/constants/apiRoutes.ts
index 64cd38a..0eac521 100644
--- a/src/constants/apiRoutes.ts
+++ b/src/constants/apiRoutes.ts
@@ -54,7 +54,8 @@ export const API_ROUTES = {
   },
   TICKETS: {
     BASE: '/biz/api/v1/tickets',
-    DETAIL: (id: string, defectClass: string) =>
+    DETAIL: (id: string) => `/biz/api/v1/tickets/${id}`,
+    CLASS_DETAIL: (id: string, defectClass: string) =>
       `/biz/api/v1/tickets/${id}/class-detail?defect_class=${defectClass}`,
     DEFECT_CLASSES: (id: string) => `/biz/api/v1/tickets/${id}/defect-classes`,
     ASSIGN: (id: string) => `/biz/api/v1/tickets/${id}/assign`,
diff --git a/src/services/api/ticket.service.ts b/src/services/api/ticket.service.ts
index ed10bce..fc8cbab 100644
--- a/src/services/api/ticket.service.ts
+++ b/src/services/api/ticket.service.ts
@@ -35,11 +35,13 @@ export const ticketService = {
 
   getTicketDetail: async (
     ticketId: string,
-    defectClass: string,
+    defectClass?: string,
   ): Promise<TicketDetail> => {
-    const response = await axiosClient.get<TicketDetail>(
-      API_ROUTES.TICKETS.DETAIL(ticketId, defectClass),
-    );
+    const path = defectClass
+      ? API_ROUTES.TICKETS.CLASS_DETAIL(ticketId, defectClass)
+      : API_ROUTES.TICKETS.DETAIL(ticketId);
+
+    const response = await axiosClient.get<TicketDetail>(path);
     return response.data;
   },
 
diff --git a/src/types/ticket/detail.ts b/src/types/ticket/detail.ts
index cbfae64..60186c4 100644
--- a/src/types/ticket/detail.ts
+++ b/src/types/ticket/detail.ts
@@ -71,6 +71,7 @@ export interface TicketDetail {
   ticket_name?: string;
   video_id: string;
   chainage_id: string | null;
+  chainage_name: string | null;
   status: TicketStatus;
   defect_class: string;
   defect_display_name: string;
diff --git a/src/types/ticket/events.ts b/src/types/ticket/events.ts
index 0372de6..187db31 100644
--- a/src/types/ticket/events.ts
+++ b/src/types/ticket/events.ts
@@ -14,7 +14,7 @@ export type TicketTableStatusEvent = {
   chainage_id?: string | null;
   chainage_name?: string | null;
   status?: TicketStatus;
-  default_defect_class?: string;
+  default_defect_class?: string | null;
   assigned_to_name?: string | null;
   detection_count?: number;
   created_by_name?: string | null;
diff --git a/src/types/ticket/list.ts b/src/types/ticket/list.ts
index 6667e63..c5045e0 100644
--- a/src/types/ticket/list.ts
+++ b/src/types/ticket/list.ts
@@ -12,7 +12,7 @@ export interface TicketListItem {
   chainage_id: string | null;
   chainage_name: string | null;
   status: TicketStatus;
-  default_defect_class: string;
+  default_defect_class: string | null;
   assigned_to_name: string | null;
   detection_count: number;
   created_by_name: string | null;