diff --git a/src/models/flow.ts b/src/models/flow.ts
index 7801b39..06989d9 100644
--- a/src/models/flow.ts
+++ b/src/models/flow.ts
@@ -1,45 +1,54 @@
 import { IHrefProp } from '.';
 
 export interface IFlowDefinition {
-  name: string;
-  clientKey: string;
-  href: string;
-  ref: string;
-  modifiedByRef: string;
-  modifiedAt: string;
-  revision: number;
-  archived: boolean;
-  friendlyId: string;
-  type: FlowType;
-  subtype: FlowSubType;
-  channels: FlowChannel;
-  triggers: string; // TODO: Come back to this
-  tags: string[];
-  businessProcess: string; // possibly an enum
-  traffic: ITrafficDefinition;
-  variants: any; // TODO: Come back to this
-  transpiledVariants: string;
-  status: FlowStatus;
-  schedule: IScheduleDefinition;
-  revisions: IHrefProp;
-  sampleSizeConfig: ISampleSizeDefinition;
+  name?: string;
+  clientKey?: string;
+  href?: string;
+  ref?: string;
+  modifiedByRef?: string;
+  modifiedAt?: string;
+  revision?: number;
+  archived?: boolean;
+  friendlyId?: string;
+  type?: FlowType;
+  subtype?: FlowSubType;
+  channels?: FlowChannel[];
+  triggers?: string; // TODO: Come back to this
+  tags?: string[];
+  businessProcess?: string; // possibly an enum
+  traffic?: ITrafficDefinition;
+  variants?: any; // TODO: Come back to this
+  transpiledVariants?: string;
+  status?: FlowStatus;
+  schedule?: IScheduleDefinition;
+  revisions?: IHrefProp;
+  sampleSizeConfig?: ISampleSizeDefinition;
 }
 
 export interface IScheduleDefinition {
-  type: string;
-  startDate: string;
-  endDate: string;
+  type?: string;
+  startDate?: string;
+  endDate?: string;
+}
+
+export enum FlowBusinessProcessType {
+  Interactive = 'interactive_v1',
+  Triggered = 'triggered_v1',
+}
+
+export enum FlowScheduleType {
+  Simple = 'simpleSchedule',
 }
 
 export interface ITrafficDefinition {
-  type: TrafficDefinitionType;
-  weightingAlgorithm: WeightingAlgorithm;
-  allocation: number;
-  allocationHigh: number;
-  allocationLow: number;
-  splits: ISplitDefinition[];
-  coupled: boolean;
-  modifiedAt: string;
+  type?: TrafficDefinitionType;
+  weightingAlgorithm?: WeightingAlgorithm;
+  allocation?: number;
+  allocationHigh?: number;
+  allocationLow?: number;
+  splits?: ISplitDefinition[];
+  coupled?: boolean;
+  modifiedAt?: string;
 }
 
 export enum TrafficDefinitionType {
@@ -48,7 +57,7 @@ export enum TrafficDefinitionType {
 }
 
 export interface ISplitDefinition {
-  ref: string;
+  ref?: string;
   split?: number;
   lowSplit?: number;
   highSplit?: number;
@@ -91,7 +100,7 @@ export enum FlowChannel {
 }
 
 export interface ISampleSizeDefinition {
-  baseValue: number;
-  minimumDetectableDifference: number;
-  confidenceLevel: number;
+  baseValue?: number;
+  minimumDetectableDifference?: number;
+  confidenceLevel?: number;
 }
diff --git a/src/schema/flowSchema.spec.ts b/src/schema/flowSchema.spec.ts
new file mode 100644
index 0000000..85a7e22
--- /dev/null
+++ b/src/schema/flowSchema.spec.ts
@@ -0,0 +1,46 @@
+import { expect } from 'chai';
+import { FlowChannel, FlowScheduleType, FlowStatus, FlowType, IFlowDefinition } from '../models';
+import { CreateExperienceSchema } from './flowSchema';
+
+describe('Flow Experience Input Schema', () => {
+  let experienceDefinition: IFlowDefinition;
+
+  beforeEach(() => {
+    // Initialize the base experience definition before each test
+    experienceDefinition = {
+      name: 'Test API Experience',
+      friendlyId: 'test_api_experience',
+      type: FlowType.WebFlow,
+      channels: [FlowChannel.Web],
+      status: FlowStatus.Draft,
+      schedule: {
+        type: FlowScheduleType.Simple,
+        startDate: new Date().toISOString(),
+      },
+    };
+  });
+
+  it('should return false for bad friendly id', () => {
+    experienceDefinition.friendlyId = 'test-api-experience'; // Invalid friendlyId
+
+    const validationResult = CreateExperienceSchema.safeParse(experienceDefinition);
+
+    expect(validationResult.success).to.be.equal(false);
+  });
+
+  it('should return true for valid friendly id', () => {
+    experienceDefinition.friendlyId = 'test_api_experience'; // Valid friendlyId
+
+    const validationResult = CreateExperienceSchema.safeParse(experienceDefinition);
+
+    expect(validationResult.success).to.be.equal(true);
+  });
+
+  it('should return false for missing name', () => {
+    delete experienceDefinition.name; // Missing name
+
+    const validationResult = CreateExperienceSchema.safeParse(experienceDefinition);
+
+    expect(validationResult.success).to.be.equal(false);
+  });
+});
diff --git a/src/schema/flowSchema.ts b/src/schema/flowSchema.ts
index 440e13d..ec01a53 100644
--- a/src/schema/flowSchema.ts
+++ b/src/schema/flowSchema.ts
@@ -1,79 +1,50 @@
 import { z } from 'zod';
-import { FlowType } from '../models';
+import {
+  FlowChannel,
+  FlowScheduleType,
+  FlowStatus,
+  FlowType,
+  TrafficDefinitionType,
+} from '../models';
 
 const FlowTypeValues = Object.values(FlowType) as [string, ...string[]];
+const FlowTrafficTypeValues = Object.values(TrafficDefinitionType) as [string, ...string[]];
+const FlowStatusValues = Object.values(FlowStatus) as [string, ...string[]];
+const FlowScheduleTypeValues = Object.values(FlowScheduleType) as [string, ...string[]];
+const FlowChannelValues = Object.values(FlowChannel) as [string, ...string[]];
 
 const CreateFlowSchema = z.object({
   name: z.string().min(1, { message: 'name is a required field' }),
-  friendlyId: z.string().min(1, { message: 'friendlyId is a required field' }),
-  type: z.enum(FlowTypeValues),
-  channels: z.string().min(1, { message: 'channels is a required field' }),
-  //businessProcess: z.string(), (this should get calculated automatically by type)
-  traffic: z.object({
-    type: z.string(),
-    weightingAlgorithm: z.string(),
-    allocation: z.number(),
-    allocationHigh: z.number(),
-    allocationLow: z.number(),
-    splits: z.array(
-      z.object({
-        ref: z.string(),
-        split: z.number(),
-        lowSplit: z.number(),
-        highSplit: z.number(),
-      })
-    ),
-    coupled: z.boolean(),
-    modifiedAt: z.string(),
-  }),
-  transpiledVariants: z.string().optional(),
-  status: z.string().optional(),
+  friendlyId: z
+    .string()
+    .min(1, { message: 'friendlyId is a required field' })
+    .regex(/^[a-z0-9_]*$/, { message: 'friendlyId must match "^[a-z0-9_]*$"' }),
+  type: z.enum(FlowTypeValues, { errorMap: () => ({ message: 'type is a required field' }) }),
+  channels: z
+    .array(z.enum(FlowChannelValues))
+    .min(1, { message: 'channels should contain atleast one channel' }),
+  status: z.enum(FlowStatusValues, { errorMap: () => ({ message: 'status is a required field' }) }),
   schedule: z.object({
-    type: z.string(),
-    startDate: z.string(),
-    endDate: z.string(),
+    type: z.enum(FlowScheduleTypeValues, {
+      errorMap: () => ({ message: 'schedule.type is a required field' }),
+    }),
+    startDate: z
+      .string()
+      .min(1, { message: 'schedule.startDate is a required field - Should use ISO 8601 Format' }),
   }),
 });
 
 export const CreateExperienceSchema = CreateFlowSchema.extend({
-  //subtype: z.string().optional(),     // Shouldn't be provided - Gets automatically set to 'experience'
-  //businessProcess: z.string(),    // This will be calculated automatically based on other input
-  traffic: z.object({
-    type: z.string(),
-    weightingAlgorithm: z.string(),
-    allocation: z.number(),
-    allocationHigh: z.number(),
-    allocationLow: z.number(),
-    splits: z.array(
-      z.object({
-        ref: z.string(),
-        split: z.number(),
-        lowSplit: z.number(),
-        highSplit: z.number(),
-      })
-    ),
-    coupled: z.boolean(),
-    modifiedAt: z.string(),
-  }),
-  schedule: z.object({
-    type: z.string(),
-    startDate: z.string(),
-    endDate: z.string(),
-  }),
-  sampleSizeConfig: z.object({
-    baseValue: z.number(),
-    minimumDetectableDifference: z.number(),
-    confidenceLevel: z.number(),
-  }),
+  // No differences for Experiences for Now
 });
 
 export const CreateExperimentSchema = CreateFlowSchema.extend({
-  //subtype: z.string(),     // Gets automatically set to 'experiment' for this schema
-  //businessProcess: z.string(), This will be calculated automatically based on other input
   traffic: z.object({
-    type: z.string(),
+    type: z.enum(FlowTrafficTypeValues, {
+      errorMap: () => ({ message: 'traffic.type is a required field' }),
+    }),
     weightingAlgorithm: z.string(),
-    allocation: z.number(),
+    // not required for experiments allocation: z.number(),
     allocationHigh: z.number(),
     allocationLow: z.number(),
     splits: z.array(
@@ -88,11 +59,6 @@ export const CreateExperimentSchema = CreateFlowSchema.extend({
     modifiedAt: z.string(),
   }),
   variants: z.any(),
-  schedule: z.object({
-    type: z.string(),
-    startDate: z.string(),
-    endDate: z.string(),
-  }),
   sampleSizeConfig: z.object({
     baseValue: z.number(),
     minimumDetectableDifference: z.number(),
diff --git a/src/services/flows.ts b/src/services/flows.ts
index 98a3daf..c3bc8be 100644
--- a/src/services/flows.ts
+++ b/src/services/flows.ts
@@ -1,7 +1,14 @@
 import { z } from 'zod';
 import { Client } from '../client';
-import { IFlowDefinition } from '../models';
-import { CreateExperimentSchema } from '../schema';
+import {
+  FlowBusinessProcessType,
+  FlowSubType,
+  FlowType,
+  IFlowDefinition,
+  TrafficDefinitionType,
+  WeightingAlgorithm,
+} from '../models';
+import { CreateExperienceSchema, CreateExperimentSchema } from '../schema';
 import { BaseService } from './base';
 
 /**
@@ -82,9 +89,32 @@ export class FlowService extends BaseService {
    */
   public CreateExperience = async (flow: IFlowDefinition): Promise<IFlowDefinition | undefined> => {
     try {
-      //const validatedData = CreateExperienceSchema.parse(flow);
-
-      const response = await this.Post(`v3/flowDefinitions`, flow);
+      // Validate the Input Data using Zod
+      const validatedData = CreateExperienceSchema.parse(flow);
+
+      // Add default values for Experience before validation
+      const mergedData = {
+        ...validatedData,
+        subtype: FlowSubType.Experience,
+        businessProcess:
+          validatedData.type === FlowType.Triggered
+            ? FlowBusinessProcessType.Triggered
+            : FlowBusinessProcessType.Interactive,
+        traffic: {
+          type: TrafficDefinitionType.Simple,
+          allocation: 100,
+          weightingAlgorithm: WeightingAlgorithm.UserDefined,
+          splits: [],
+        },
+        variants: [],
+        sampleSizeConfig: {
+          baseValue: 0.02, // Default Value
+          minimumDetectableDifference: 0.2, // Default Value
+          confidenceLevel: 0.95, // Default Value
+        },
+      };
+
+      const response = await this.Post(`v3/flowDefinitions`, mergedData);
 
       if (response.ok) {
         let flow: IFlowDefinition = (await response.json()) as IFlowDefinition;
@@ -92,7 +122,11 @@ export class FlowService extends BaseService {
         return flow;
       }
     } catch (ex) {
-      throw new Error(ex as string);
+      if (ex instanceof z.ZodError) {
+        console.error('Flow Definition failed validation: ', ex.errors);
+      } else {
+        throw new Error(ex as string);
+      }
     }
   };