diff --git a/src/modules/host/handlers/Activity_Hub/Scheduling/cancelSlot.ts b/src/modules/host/handlers/Activity_Hub/Scheduling/cancelSlot.ts
index 69a20bc..2ad0f4c 100644
--- a/src/modules/host/handlers/Activity_Hub/Scheduling/cancelSlot.ts
+++ b/src/modules/host/handlers/Activity_Hub/Scheduling/cancelSlot.ts
@@ -32,7 +32,17 @@ export const handler = safeHandler(async (
         throw new ApiError(404, 'Host not found');
     }
 
-    let body: { activityXid: number; venueXid: number; cancellations: { scheduleHeaderXid: number; slotXid: number; cancellationReason: string }[] };
+    let body: {
+        activityXid: number;
+        venueXid: number;
+        cancellations: {
+            scheduleHeaderXid: number;
+            occurenceDate: string;
+            startTime: string;
+            endTime: string;
+            cancellationReason: string
+        }[]
+    };
 
     try {
         body = event.body ? JSON.parse(event.body) : {};
@@ -65,7 +75,9 @@ export const handler = safeHandler(async (
     await schedulingService.cancelMultipleSlotsForActivity(
         body.cancellations.map((item: any) => ({
             scheduleHeaderXid: Number(item.scheduleHeaderXid),
-            slotXid: Number(item.slotXid),
+            occurenceDate: item.occurenceDate,
+            startTime: item.startTime,
+            endTime: item.endTime,
             cancellationReason: item.cancellationReason
         }))
     );
diff --git a/src/modules/host/handlers/Activity_Hub/Scheduling/openCanceledSlot.ts b/src/modules/host/handlers/Activity_Hub/Scheduling/openCanceledSlot.ts
index aa4fac2..2eaaa9e 100644
--- a/src/modules/host/handlers/Activity_Hub/Scheduling/openCanceledSlot.ts
+++ b/src/modules/host/handlers/Activity_Hub/Scheduling/openCanceledSlot.ts
@@ -44,7 +44,7 @@ export const handler = safeHandler(
     let body: {
       activityXid: number;
       venueXid: number;
-      cancellations: { cancellationXid: number; slotXid: number }[];
+      cancellations: { cancellationXid: number; }[];
     };
 
     try {
@@ -79,7 +79,6 @@ export const handler = safeHandler(
     await schedulingService.openCanceledSlot(
       body.cancellations.map((item: any) => ({
         cancellationXid: Number(item.cancellationXid),
-        slotXid: Number(item.slotXid),
       })),
     );
 
diff --git a/src/modules/host/services/activityScheduling.service.ts b/src/modules/host/services/activityScheduling.service.ts
index 36cab6b..82ace3c 100644
--- a/src/modules/host/services/activityScheduling.service.ts
+++ b/src/modules/host/services/activityScheduling.service.ts
@@ -16,7 +16,7 @@ const bucket = config.aws.bucketName;
 
 @Injectable()
 export class SchedulingService {
-  constructor(private prisma: PrismaClient) {}
+  constructor(private prisma: PrismaClient) { }
 
   async getHostIdByUserId(userId: number) {
     const host = await this.prisma.hostHeader.findFirst({
@@ -307,18 +307,25 @@ export class SchedulingService {
     const response = [];
 
     for (const header of scheduleHeaders) {
-      const cancelledSlotIds = new Set(
-        header.Cancellations.map((c) => c.slotXid),
+
+      // Build cancellation set using time matching
+      const cancelledSlots = new Set(
+        header.Cancellations.map(
+          (c) => `${c.startTime}-${c.endTime}`
+        )
       );
 
-      const slots = header.ScheduleDetails.filter(
-        (slot) => !cancelledSlotIds.has(slot.id),
-      ).map((slot) => ({
-        slotId: slot.id,
-        startTime: slot.startTime,
-        endTime: slot.endTime,
-        maxCapacity: slot.maxCapacity,
-      }));
+      const slots = header.ScheduleDetails
+        .filter(
+          (slot) =>
+            !cancelledSlots.has(`${slot.startTime}-${slot.endTime}`)
+        )
+        .map((slot) => ({
+          slotId: slot.id,
+          startTime: slot.startTime,
+          endTime: slot.endTime,
+          maxCapacity: slot.maxCapacity,
+        }));
 
       if (!slots.length) continue;
 
@@ -326,6 +333,7 @@ export class SchedulingService {
         venueXid: header.activityVenue.id,
         venueName: header.activityVenue.venueName,
         venueLabel: header.activityVenue.venueLabel,
+        venueCapacity: header.activityVenue.venueCapacity,
         slots,
       });
     }
@@ -389,21 +397,28 @@ export class SchedulingService {
     if (!scheduleHeaders.length) return [];
 
     const response = scheduleHeaders.map((header) => {
-      const cancelledSlotIds = new Set(
-        header.Cancellations.map((c) => c.slotXid),
+
+      // Match cancelled slots using startTime + endTime
+      const cancelledSlots = new Set(
+        header.Cancellations.map(
+          (c) => `${c.startTime}-${c.endTime}`
+        )
       );
 
-      const slots = header.ScheduleDetails.filter(
-        (slot) => !cancelledSlotIds.has(slot.id),
-      ).map((slot) => ({
-        slotId: slot.id,
-        occurenceDate: slot.occurenceDate,
-        weekDay: slot.weekDay,
-        dayOfMonth: slot.dayOfMonth,
-        startTime: slot.startTime,
-        endTime: slot.endTime,
-        maxCapacity: slot.maxCapacity,
-      }));
+      const slots = header.ScheduleDetails
+        .filter(
+          (slot) =>
+            !cancelledSlots.has(`${slot.startTime}-${slot.endTime}`)
+        )
+        .map((slot) => ({
+          slotId: slot.id,
+          occurenceDate: slot.occurenceDate,
+          weekDay: slot.weekDay,
+          dayOfMonth: slot.dayOfMonth,
+          startTime: slot.startTime,
+          endTime: slot.endTime,
+          maxCapacity: slot.maxCapacity,
+        }));
 
       return {
         scheduleHeaderXid: header.id,
@@ -418,7 +433,7 @@ export class SchedulingService {
           venueLabel: header.activityVenue.venueLabel,
           venueCapacity: header.activityVenue.venueCapacity,
         },
-        slots,
+        slots, // only active slots, no cancellation flag
       };
     });
 
@@ -586,18 +601,10 @@ export class SchedulingService {
                   where: { isActive: true },
                   select: {
                     id: true,
-                    slotXid: true,
                     cancellationReason: true,
-                    slot: {
-                      select: {
-                        id: true,
-                        occurenceDate: true,
-                        startTime: true,
-                        endTime: true,
-                        weekDay: true,
-                        dayOfMonth: true,
-                      },
-                    },
+                    occurenceDate: true,
+                    startTime: true,
+                    endTime: true,
                   },
                 },
                 scheduleOccurences: {
@@ -646,16 +653,6 @@ export class SchedulingService {
 
     for (const venue of result.ActivityVenues ?? []) {
       for (const header of venue.ScheduleHeader ?? []) {
-        /* -------------------------------
-                   🚫 SLOT CANCELLATION FLAG
-                -------------------------------- */
-        const cancelledSlotIds = new Set(
-          header.Cancellations?.map((c) => c.slotXid),
-        );
-
-        for (const slot of header.ScheduleDetails ?? []) {
-          (slot as any).isCancelled = cancelledSlotIds.has(slot.id);
-        }
 
         /* -------------------------------
                    📅 FRONTEND FRIENDLY META
@@ -710,14 +707,18 @@ export class SchedulingService {
   async cancelMultipleSlotsForActivity(
     cancellations: {
       scheduleHeaderXid: number;
-      slotXid: number;
+      occurenceDate: string;
+      startTime: string;
+      endTime: string;
       cancellationReason?: string;
     }[],
   ) {
     return await this.prisma.cancellations.createMany({
       data: cancellations.map((item) => ({
         scheduleHeaderXid: item.scheduleHeaderXid,
-        slotXid: item.slotXid,
+        occurenceDate: item.occurenceDate,
+        startTime: item.startTime,
+        endTime: item.endTime,
         cancellationReason: item.cancellationReason || 'No reason provided',
       })),
       skipDuplicates: true,
@@ -725,7 +726,7 @@ export class SchedulingService {
   }
 
   async openCanceledSlot(
-    cancellations: { cancellationXid: number; slotXid: number }[],
+    cancellations: { cancellationXid: number; }[],
   ) {
     return await this.prisma.cancellations.updateMany({
       where: {