diff --git a/packages/features/bookings/lib/handleNewBooking.ts b/packages/features/bookings/lib/handleNewBooking.ts
index f9bfe31d12..bff459fc4c 100644
--- a/packages/features/bookings/lib/handleNewBooking.ts
+++ b/packages/features/bookings/lib/handleNewBooking.ts
@@ -49,7 +49,8 @@ import { slugify } from "@calcom/lib/slugify";
 import { updateWebUser as syncServicesUpdateWebUser } from "@calcom/lib/sync/SyncServiceManager";
 import prisma, { userSelect } from "@calcom/prisma";
 import {
-  bookingCreateSchemaForApiOnly,
+  bookingCreateBodySchemaForApi,
+  bookingCreateSchemaLegacyPropsForApi,
   customInputSchema,
   EventTypeMetaDataSchema,
   extendedBookingCreateBody,
@@ -330,7 +331,7 @@ function getBookingData({
           }),
         })
       )
-    : extendedBookingCreateBody.merge(bookingCreateSchemaForApiOnly);
+    : bookingCreateBodySchemaForApi;
 
   const reqBody = bookingDataSchema.parse(req.body);
   if ("responses" in reqBody) {
@@ -372,7 +373,7 @@ function getBookingData({
 function getCustomInputsResponses(
   reqBody: {
     responses?: Record<string, any>;
-    customInputs?: z.infer<typeof bookingCreateSchemaForApiOnly>["customInputs"];
+    customInputs?: z.infer<typeof bookingCreateSchemaLegacyPropsForApi>["customInputs"];
   },
   eventTypeCustomInputs: Awaited<ReturnType<typeof getEventTypesFromDB>>["customInputs"]
 ) {
@@ -1359,7 +1360,7 @@ async function handler(
   try {
     await scheduleWorkflowReminders(
       eventType.workflows,
-      smsReminderNumber as string | null,
+      smsReminderNumber || null,
       { ...evt, ...{ metadata } },
       evt.requiresConfirmation || false,
       rescheduleUid ? true : false,
diff --git a/packages/prisma/zod-utils.ts b/packages/prisma/zod-utils.ts
index 0bee826de5..c40bc61bfe 100644
--- a/packages/prisma/zod-utils.ts
+++ b/packages/prisma/zod-utils.ts
@@ -143,16 +143,6 @@ export const stringOrNumber = z.union([
 
 export const stringToDayjs = z.string().transform((val) => dayjs(val));
 
-export const bookingCreateSchemaForApiOnly = z.object({
-  name: z.string(),
-  email: z.string(),
-  location: z.string().optional(),
-  guests: z.array(z.string()).optional(),
-  notes: z.string().optional(),
-  rescheduleReason: z.string().optional(),
-  customInputs: z.array(z.object({ label: z.string(), value: z.union([z.string(), z.boolean()]) })),
-});
-
 export const bookingCreateBodySchema = z.object({
   end: z.string(),
   eventTypeId: z.number(),
@@ -186,13 +176,13 @@ export const bookingConfirmPatchBodySchema = z.object({
   reason: z.string().optional(),
 });
 
+// `responses` is merged with it during handleNewBooking call because `responses` schema is dynamic and depends on eventType
 export const extendedBookingCreateBody = bookingCreateBodySchema.merge(
   z.object({
     noEmail: z.boolean().optional(),
     recurringCount: z.number().optional(),
     allRecurringDates: z.string().array().optional(),
     currentRecurringIndex: z.number().optional(),
-    smsReminderNumber: z.string().optional().nullable(),
     appsStatus: z
       .array(
         z.object({
@@ -208,6 +198,23 @@ export const extendedBookingCreateBody = bookingCreateBodySchema.merge(
   })
 );
 
+// It has only the legacy props that are part of `responses` now. The API can still hit old props
+export const bookingCreateSchemaLegacyPropsForApi = z.object({
+  email: z.string(),
+  name: z.string(),
+  guests: z.array(z.string()).optional(),
+  notes: z.string().optional(),
+  location: z.string().optional(),
+  smsReminderNumber: z.string().optional().nullable(),
+  rescheduleReason: z.string().optional(),
+  customInputs: z.array(z.object({ label: z.string(), value: z.union([z.string(), z.boolean()]) })),
+});
+
+// This is the schema that is used for the API. It has all the legacy props that are part of `responses` now.
+export const bookingCreateBodySchemaForApi = extendedBookingCreateBody.merge(
+  bookingCreateSchemaLegacyPropsForApi
+);
+
 export const schemaBookingCancelParams = z.object({
   id: z.number().optional(),
   uid: z.string().optional(),