fixed the service code and added validation

src/modules/host/handlers/Activity_Hub/Scheduling/cancelSlot.ts

@@ -34,13 +34,16 @@ export const handler = safeHandler(async (
         throw new ApiError(404, 'Host not found');
     }
 
-    let body: { activityXid: number; venueXid: number; scheduleHeaderXid: number; slotXid?: number; cancellationReason?: string };
+    let body: { activityXid: number; venueXid: number; scheduleHeaderXid: number; slotXid: number; cancellationReason?: string };
 
     try {
         body = event.body ? JSON.parse(event.body) : {};
     } catch {
         throw new ApiError(400, 'Invalid JSON payload');
     }
+    if(!body.activityXid || !body.venueXid || !body.scheduleHeaderXid || !body.slotXid){
+        throw new ApiError(400, 'Missing required fields');
+    }
 
     const activity = await schedulingService.getActivityByXid(body.activityXid);
     if (!activity) {

src/modules/host/services/activityScheduling.service.ts

@@ -508,11 +508,15 @@ export class SchedulingService {
         scheduleHeaderXid: number,
         slotXid?: number,
         cancellationReason?: string
-    ){
+    ) {
         return await this.prisma.cancellations.create({
             data: {
-                scheduleHeaderXid,
-                slotXid,
+                scheduleHeader: {
+                    connect: { id: scheduleHeaderXid },
+                },
+                slot: {
+                    connect: { id: slotXid },
+                },
                 cancellationReason
             }
         })