diff --git a/lib/validations/attendee.ts b/lib/validations/attendee.ts
index d603eaaf63..70444437aa 100644
--- a/lib/validations/attendee.ts
+++ b/lib/validations/attendee.ts
@@ -15,14 +15,13 @@ const schemaAttendeeCreateParams = z
   .object({
     bookingId: z.number().int(),
     email: z.string().email(),
-    name: z.string(),
+    name: z.string().optional(),
     timeZone: timeZone,
   })
   .strict();
 
 const schemaAttendeeEditParams = z
   .object({
-    // @note: disallowing bookingId changes in attendee via API for now as it would introduce side effects
     name: z.string().optional(),
     email: z.string().email().optional(),
     timeZone: timeZone.optional(),
diff --git a/lib/validations/availability.ts b/lib/validations/availability.ts
index 6039dfb80f..a6ddf4b5c6 100644
--- a/lib/validations/availability.ts
+++ b/lib/validations/availability.ts
@@ -21,19 +21,24 @@ export const schemaAvailabilityReadPublic = Availability.pick({
   eventTypeId: true,
 });
 
-const schemaAvailabilityCreateParams = z.object({
-  startTime: z.date().or(z.string()),
-  endTime: z.date().or(z.string()),
-  days: z.array(z.number()).optional(),
-  eventTypeId: z.number().optional(),
-});
+const schemaAvailabilityCreateParams = z
+  .object({
+    startTime: z.date().or(z.string()),
+    endTime: z.date().or(z.string()),
+    days: z.array(z.number()).optional(),
+    eventTypeId: z.number().optional(),
+  })
+  .strict();
+
+const schemaAvailabilityEditParams = z
+  .object({
+    startTime: z.date().or(z.string()).optional(),
+    endTime: z.date().or(z.string()).optional(),
+    days: z.array(z.number()).optional(),
+    eventTypeId: z.number().optional(),
+  })
+  .strict();
 
-const schemaAvailabilityEditParams = z.object({
-  startTime: z.date().or(z.string()).optional(),
-  endTime: z.date().or(z.string()).optional(),
-  days: z.array(z.number()).optional(),
-  eventTypeId: z.number().optional(),
-});
 export const schemaAvailabilityEditBodyParams = schemaAvailabilityBaseBodyParams.merge(
   schemaAvailabilityEditParams
 );
diff --git a/lib/validations/booking-reference.ts b/lib/validations/booking-reference.ts
index f207b09208..66aabc3d88 100644
--- a/lib/validations/booking-reference.ts
+++ b/lib/validations/booking-reference.ts
@@ -23,22 +23,28 @@ export const schemaBookingReferenceReadPublic = BookingReference.pick({
   deleted: true,
 });
 
-const schemaBookingReferenceEditParams = z.object({
-  type: z.string(),
-  uid: z.string(),
-  meetingId: z.string(),
-  meetingPassword: z.string(),
-  meetingUrl: z.string(),
-  deleted: z.boolean(),
-});
-const schemaBookingReferenceCreateParams = z.object({
-  type: z.string(),
-  uid: z.string(),
-  meetingId: z.string(),
-  meetingPassword: z.string(),
-  meetingUrl: z.string(),
-  deleted: z.boolean(),
-});
+const schemaBookingReferenceCreateParams = z
+  .object({
+    type: z.string(),
+    uid: z.string(),
+    meetingId: z.string(),
+    meetingPassword: z.string(),
+    meetingUrl: z.string(),
+    deleted: z.boolean(),
+  })
+  .strict();
+
+const schemaBookingReferenceEditParams = z
+  .object({
+    type: z.string().optional(),
+    uid: z.string().optional(),
+    meetingId: z.string().optional(),
+    meetingPassword: z.string().optional(),
+    meetingUrl: z.string().optional(),
+    deleted: z.boolean().optional(),
+  })
+  .strict();
+
 export const schemaBookingCreateBodyParams = schemaBookingReferenceBaseBodyParams.merge(
   schemaBookingReferenceCreateParams
 );
diff --git a/lib/validations/booking.ts b/lib/validations/booking.ts
index 5bf187f523..60c231efa5 100644
--- a/lib/validations/booking.ts
+++ b/lib/validations/booking.ts
@@ -11,24 +11,27 @@ const schemaBookingBaseBodyParams = Booking.pick({
   endTime: true,
 }).partial();
 
-const schemaBookingCreateParams = z.object({
-  uid: z.string(),
-  userId: z.number(),
-  eventTypeId: z.number(),
-  title: z.string(),
-  startTime: z.date(),
-  endTime: z.date(),
-});
+const schemaBookingCreateParams = z
+  .object({
+    uid: z.string(),
+    userId: z.number(),
+    eventTypeId: z.number(),
+    title: z.string(),
+    startTime: z.date(),
+    endTime: z.date(),
+  })
+  .strict();
 
 export const schemaBookingCreateBodyParams = schemaBookingBaseBodyParams.merge(schemaBookingCreateParams);
 
-// @note: disallowing userId/eventTypeId changes in booking endpoint via PATCH for now as it would introduce side effects
-const schemaBookingEditParams = z.object({
-  uid: z.string(),
-  title: z.string(),
-  startTime: z.date(),
-  endTime: z.date(),
-});
+const schemaBookingEditParams = z
+  .object({
+    uid: z.string().optional(),
+    title: z.string().optional(),
+    startTime: z.date().optional(),
+    endTime: z.date().optional(),
+  })
+  .strict();
 
 export const schemaBookingEditBodyParams = schemaBookingBaseBodyParams.merge(schemaBookingEditParams);
 
diff --git a/lib/validations/daily-event-reference.ts b/lib/validations/daily-event-reference.ts
index ca74d5a95f..0ce79e6324 100644
--- a/lib/validations/daily-event-reference.ts
+++ b/lib/validations/daily-event-reference.ts
@@ -8,21 +8,24 @@ export const schemaDailyEventReferenceBaseBodyParams = DailyEventReference.pick(
   bookingId: true,
 }).partial();
 
-const schemaDailyEventReferenceCreateParams = z.object({
-  dailytoken: z.string(),
-  dailyurl: z.string(),
-  bookingId: z.number(),
-});
+const schemaDailyEventReferenceCreateParams = z
+  .object({
+    dailytoken: z.string(),
+    dailyurl: z.string(),
+    bookingId: z.number(),
+  })
+  .strict();
 
 export const schemaDailyEventReferenceCreateBodyParams = schemaDailyEventReferenceBaseBodyParams.merge(
   schemaDailyEventReferenceCreateParams
 );
 
-const schemaDailyEventReferenceEditParams = z.object({
-  dailytoken: z.string(),
-  dailyurl: z.string(),
-  // @note: disallowing bookingId changes in daily-event-reference via API endpoint for now as it would introduce side effects
-});
+const schemaDailyEventReferenceEditParams = z
+  .object({
+    dailytoken: z.string().optional(),
+    dailyurl: z.string().optional(),
+  })
+  .strict();
 
 export const schemaDailyEventReferenceEditBodyParams = schemaDailyEventReferenceBaseBodyParams.merge(
   schemaDailyEventReferenceEditParams
diff --git a/lib/validations/destination-calendar.ts b/lib/validations/destination-calendar.ts
index 541260d4dc..7f90cd0002 100644
--- a/lib/validations/destination-calendar.ts
+++ b/lib/validations/destination-calendar.ts
@@ -10,29 +10,34 @@ export const schemaDestinationCalendarBaseBodyParams = DestinationCalendar.pick(
   userId: true,
 }).partial();
 
-const schemaDestinationCalendarEditParams = z.object({
-  integration: z.string(),
-  externalId: z.string(),
-  eventTypeId: z.number(),
-  bookingId: z.number(),
-  userId: z.number(),
-});
-
-export const schemaDestinationCalendarEditBodyParams = schemaDestinationCalendarBaseBodyParams.merge(
-  schemaDestinationCalendarEditParams
-);
-const schemaDestinationCalendarCreateParams = z.object({
-  integration: z.string(),
-  externalId: z.string(),
-  eventTypeId: z.number(),
-  bookingId: z.number(),
-  userId: z.number(),
-});
+const schemaDestinationCalendarCreateParams = z
+  .object({
+    integration: z.string(),
+    externalId: z.string(),
+    eventTypeId: z.number(),
+    bookingId: z.number(),
+    userId: z.number(),
+  })
+  .strict();
 
 export const schemaDestinationCalendarCreateBodyParams = schemaDestinationCalendarBaseBodyParams.merge(
   schemaDestinationCalendarCreateParams
 );
 
+const schemaDestinationCalendarEditParams = z
+  .object({
+    integration: z.string().optional(),
+    externalId: z.string().optional(),
+    eventTypeId: z.number().optional(),
+    bookingId: z.number().optional(),
+    userId: z.number().optional(),
+  })
+  .strict();
+
+export const schemaDestinationCalendarEditBodyParams = schemaDestinationCalendarBaseBodyParams.merge(
+  schemaDestinationCalendarEditParams
+);
+
 export const schemaDestinationCalendarReadPublic = DestinationCalendar.pick({
   id: true,
   integration: true,