diff --git a/src/modules/ad/domain/dtos/create-ad.request.ts b/src/modules/ad/domain/dtos/create-ad.request.ts
index a8b01b5..e269871 100644
--- a/src/modules/ad/domain/dtos/create-ad.request.ts
+++ b/src/modules/ad/domain/dtos/create-ad.request.ts
@@ -11,12 +11,14 @@ import {
   ArrayMinSize,
   IsNotEmptyObject,
 } from 'class-validator';
-import { Frequency } from '../entities/frequency.enum';
+import { Frequency } from '../types/frequency.enum';
 import { Transform, Type } from 'class-transformer';
 import { mappingKeyToFrequency } from './utils/frequency.mapping';
 import { MarginDTO } from './create.margin.dto';
 import { ScheduleDTO } from './create.schedule.dto';
 import { AddressDTO } from './create.address.dto';
+import { HasProperPassengerSeats } from './has-passenger-seats.validator';
+import { HasProperDriverSeats } from './has-driver-seats.validator';
 
 export class CreateAdRequest {
   @IsString()
@@ -24,11 +26,13 @@ export class CreateAdRequest {
   userUuid: string;
 
   @IsOptional()
+  @HasProperDriverSeats()
   @IsBoolean()
   @AutoMap()
   driver?: boolean;
 
   @IsOptional()
+  @HasProperPassengerSeats()
   @IsBoolean()
   @AutoMap()
   passenger?: boolean;
@@ -63,13 +67,13 @@ export class CreateAdRequest {
   @ValidateNested({ each: true })
   @IsNotEmptyObject()
   @AutoMap()
-  schedule: ScheduleDTO;
+  schedule?: ScheduleDTO;
 
   @IsOptional()
   @Type(() => MarginDTO)
   @ValidateNested({ each: true })
   @AutoMap()
-  marginDurations: MarginDTO;
+  marginDurations?: MarginDTO;
 
   @ValidateIf((ad) => ad.driver)
   @IsInt()
diff --git a/src/modules/ad/domain/dtos/has-driver-seats.validator.ts b/src/modules/ad/domain/dtos/has-driver-seats.validator.ts
new file mode 100644
index 0000000..0712f1c
--- /dev/null
+++ b/src/modules/ad/domain/dtos/has-driver-seats.validator.ts
@@ -0,0 +1,43 @@
+import {
+  ValidateBy,
+  ValidationArguments,
+  ValidationOptions,
+  buildMessage,
+} from 'class-validator';
+// TODO refactor ??
+// TODO propely set driver max limit
+export function hasProperDriverSeats(value: any, args: ValidationArguments) {
+  console.log('here ');
+  console.log(value);
+  console.log(args.object);
+  if (value === true && typeof args.object['seatsDriver'] === 'number')
+    return args.object['seatsDriver'] > 0;
+  else if (
+    (value === false || value === null || value === undefined) &&
+    (args.object['seatsDriver'] === 0 ||
+      args.object['seatsDriver'] === null ||
+      args.object['seatsDriver'] === undefined)
+  )
+    return true;
+  else return false;
+}
+
+export function HasProperDriverSeats(
+  validationOptions?: ValidationOptions,
+): PropertyDecorator {
+  return ValidateBy(
+    {
+      name: '',
+      constraints: [],
+      validator: {
+        validate: (value, args: ValidationArguments): boolean =>
+          hasProperDriverSeats(value, args),
+        defaultMessage: buildMessage(
+          () => `driver and driver seats are not correct`,
+          validationOptions,
+        ),
+      },
+    },
+    validationOptions,
+  );
+}
diff --git a/src/modules/ad/domain/dtos/has-passenger-seats.validator.ts b/src/modules/ad/domain/dtos/has-passenger-seats.validator.ts
new file mode 100644
index 0000000..d403c2c
--- /dev/null
+++ b/src/modules/ad/domain/dtos/has-passenger-seats.validator.ts
@@ -0,0 +1,43 @@
+import {
+  ValidateBy,
+  ValidationArguments,
+  ValidationOptions,
+  buildMessage,
+} from 'class-validator';
+// TODO refactor ??
+// TODO propely set passenger max limit
+export function hasProperPassengerSeats(value: any, args: ValidationArguments) {
+  console.log('here ');
+  console.log(value);
+  console.log(args.object);
+  if (value === true && typeof args.object['seatsPassenger'] === 'number')
+    return args.object['seatsPassenger'] > 0;
+  else if (
+    (value === false || value === null || value === undefined) &&
+    (args.object['seatsPassenger'] === 0 ||
+      args.object['seatsPassenger'] === null ||
+      args.object['seatsPassenger'] === undefined)
+  )
+    return true;
+  else return false;
+}
+
+export function HasProperPassengerSeats(
+  validationOptions?: ValidationOptions,
+): PropertyDecorator {
+  return ValidateBy(
+    {
+      name: '',
+      constraints: [],
+      validator: {
+        validate: (value, args: ValidationArguments): boolean =>
+          hasProperPassengerSeats(value, args),
+        defaultMessage: buildMessage(
+          () => `passenger and passenger seats are not correct`,
+          validationOptions,
+        ),
+      },
+    },
+    validationOptions,
+  );
+}
diff --git a/src/modules/ad/domain/dtos/utils/frequency.mapping.ts b/src/modules/ad/domain/dtos/utils/frequency.mapping.ts
index 8c41025..4d59786 100644
--- a/src/modules/ad/domain/dtos/utils/frequency.mapping.ts
+++ b/src/modules/ad/domain/dtos/utils/frequency.mapping.ts
@@ -1,4 +1,4 @@
-import { Frequency } from '../../entities/frequency.enum';
+import { Frequency } from '../../types/frequency.enum';
 export const mappingKeyToFrequency = (index: number): string => {
   return Frequency[index - 1];
 };
diff --git a/src/modules/ad/domain/entities/ad.ts b/src/modules/ad/domain/entities/ad.ts
index 58015a6..952eed9 100644
--- a/src/modules/ad/domain/entities/ad.ts
+++ b/src/modules/ad/domain/entities/ad.ts
@@ -8,7 +8,7 @@ import {
   IsEnum,
 } from 'class-validator';
 import { Address } from '../entities/address';
-import { Frequency } from './frequency.enum';
+import { Frequency } from '../types/frequency.enum';
 
 export class Ad {
   @IsString()
diff --git a/src/modules/ad/domain/interfaces/param-provider.interface.ts b/src/modules/ad/domain/interfaces/param-provider.interface.ts
new file mode 100644
index 0000000..4169e3b
--- /dev/null
+++ b/src/modules/ad/domain/interfaces/param-provider.interface.ts
@@ -0,0 +1,4 @@
+import { DefaultParams } from '../types/default-params.type';
+export interface IProvideParams {
+  getParams(): DefaultParams;
+}
diff --git a/src/modules/ad/domain/types/default-params.type.ts b/src/modules/ad/domain/types/default-params.type.ts
new file mode 100644
index 0000000..26a475e
--- /dev/null
+++ b/src/modules/ad/domain/types/default-params.type.ts
@@ -0,0 +1,3 @@
+export type DefaultParams = {
+  DEFAULT_MARGIN: number;
+};
diff --git a/src/modules/ad/domain/entities/frequency.enum.ts b/src/modules/ad/domain/types/frequency.enum.ts
similarity index 100%
rename from src/modules/ad/domain/entities/frequency.enum.ts
rename to src/modules/ad/domain/types/frequency.enum.ts
diff --git a/src/modules/ad/domain/usecases/create-ad.usecase.ts b/src/modules/ad/domain/usecases/create-ad.usecase.ts
index 5b4faa0..6569242 100644
--- a/src/modules/ad/domain/usecases/create-ad.usecase.ts
+++ b/src/modules/ad/domain/usecases/create-ad.usecase.ts
@@ -21,7 +21,6 @@ export class CreateAdUseCase {
       CreateAdRequest,
       Ad,
     );
-
     try {
       const ad = await this._repository.create(entity);
       // this._messager.publish('ad.create', JSON.stringify(ad));
diff --git a/src/modules/ad/tests/unit/create-ad.usecase.spec.ts b/src/modules/ad/tests/unit/create-ad.usecase.spec.ts
index a32e541..d3fe379 100644
--- a/src/modules/ad/tests/unit/create-ad.usecase.spec.ts
+++ b/src/modules/ad/tests/unit/create-ad.usecase.spec.ts
@@ -7,9 +7,11 @@ import { AdsRepository } from '../../adapters/secondaries/ads.repository';
 import { CreateAdCommand } from '../../commands/create-ad.command';
 import { AutomapperModule } from '@automapper/nestjs';
 import { classes } from '@automapper/classes';
-import { Frequency } from '../../domain/entities/frequency.enum';
+import { Frequency } from '../../domain/types/frequency.enum';
 import { Ad } from '../../domain/entities/ad';
 import { AdProfile } from '../../mappers/ad.profile';
+import { ScheduleDTO } from '../../domain/dtos/create.schedule.dto';
+import { ObjectUnsubscribedError } from 'rxjs';
 
 const mockAddress1: Address = {
   position: 0,
@@ -37,8 +39,19 @@ const newAdRequest: CreateAdRequest = {
   frequency: Frequency.RECURRENT,
   fromDate: new Date('01-05-2023'),
   toDate: new Date('20-08-2023'),
-  tueTime: '08:00',
-  wedTime: '08:30',
+  schedule: {
+    tue: '08:00',
+    wed: '08:30',
+  },
+  marginDurations: {
+    mon: undefined,
+    tue: undefined,
+    wed: undefined,
+    thu: undefined,
+    fri: undefined,
+    sat: undefined,
+    sun: undefined,
+  },
   seatsPassenger: 2,
   addresses: [mockAddress1, mockAddress2],
 };
@@ -63,7 +76,6 @@ const mockAdRepository = {
       throw new Error('Already exists');
     }),
 };
-
 describe('CreateAdUseCase', () => {
   let createAdUseCase: CreateAdUseCase;
   beforeAll(async () => {
@@ -89,6 +101,9 @@ describe('CreateAdUseCase', () => {
     expect(createAdUseCase).toBeDefined();
   });
 
+  // describe('Ad parameters validation', () => {
+  //   it('should throw an error if ');
+  // });
   describe('execution', () => {
     it('should create an new ad', async () => {
       const newAd: Ad = await createAdUseCase.execute(newAdCommand);
diff --git a/src/modules/ad/tests/unit/has-driver-seats-validator.spec.ts b/src/modules/ad/tests/unit/has-driver-seats-validator.spec.ts
new file mode 100644
index 0000000..10fa283
--- /dev/null
+++ b/src/modules/ad/tests/unit/has-driver-seats-validator.spec.ts
@@ -0,0 +1,100 @@
+import { hasProperDriverSeats } from '../../domain/dtos/has-driver-seats.validator';
+
+describe('driver and/or driver seats validator', () => {
+  it('should validate if driver and drivers seats is not provided ', () => {
+    expect(
+      hasProperDriverSeats(undefined, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: {},
+        property: '',
+      }),
+    ).toBe(true);
+    expect(
+      hasProperDriverSeats(false, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: {},
+        property: '',
+      }),
+    ).toBe(true);
+    expect(
+      hasProperDriverSeats(null, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: {},
+        property: '',
+      }),
+    ).toBe(true);
+  });
+  it('should not validate if driver is set to true but not the related seats is not provided or 0', () => {
+    expect(
+      hasProperDriverSeats(true, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: {},
+        property: '',
+      }),
+    ).toBe(false);
+    expect(
+      hasProperDriverSeats(true, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsDriver: 0 },
+        property: '',
+      }),
+    ).toBe(false);
+    expect(
+      hasProperDriverSeats(true, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsDriver: undefined },
+        property: '',
+      }),
+    ).toBe(false);
+    expect(
+      hasProperDriverSeats(true, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsDriver: null },
+        property: '',
+      }),
+    ).toBe(false);
+  });
+  it('should not validate if driver seats are provided but driver is not set or set to false ', () => {
+    expect(
+      hasProperDriverSeats(false, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsDriver: 1 },
+        property: '',
+      }),
+    ).toBe(false);
+    expect(
+      hasProperDriverSeats(undefined, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsDriver: 1 },
+        property: '',
+      }),
+    ).toBe(false);
+    expect(
+      hasProperDriverSeats(null, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsDriver: 1 },
+        property: '',
+      }),
+    ).toBe(false);
+  });
+});
diff --git a/src/modules/ad/tests/unit/has-passenger-seats-validator.spec.ts b/src/modules/ad/tests/unit/has-passenger-seats-validator.spec.ts
new file mode 100644
index 0000000..cec5a6e
--- /dev/null
+++ b/src/modules/ad/tests/unit/has-passenger-seats-validator.spec.ts
@@ -0,0 +1,100 @@
+import { hasProperPassengerSeats } from '../../domain/dtos/has-passenger-seats.validator';
+
+describe('driver and/or passenger seats validator', () => {
+  it('should validate if passenger and passengers seats is not provided ', () => {
+    expect(
+      hasProperPassengerSeats(undefined, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: {},
+        property: '',
+      }),
+    ).toBe(true);
+    expect(
+      hasProperPassengerSeats(false, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: {},
+        property: '',
+      }),
+    ).toBe(true);
+    expect(
+      hasProperPassengerSeats(null, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: {},
+        property: '',
+      }),
+    ).toBe(true);
+  });
+  it('should not validate if passenger is set to true but not the related seats is not provided or 0', () => {
+    expect(
+      hasProperPassengerSeats(true, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: {},
+        property: '',
+      }),
+    ).toBe(false);
+    expect(
+      hasProperPassengerSeats(true, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsPassenger: 0 },
+        property: '',
+      }),
+    ).toBe(false);
+    expect(
+      hasProperPassengerSeats(true, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsPassenger: undefined },
+        property: '',
+      }),
+    ).toBe(false);
+    expect(
+      hasProperPassengerSeats(true, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsPassenger: null },
+        property: '',
+      }),
+    ).toBe(false);
+  });
+  it('should not validate if passenger seats are provided but passenger is not set or set to false ', () => {
+    expect(
+      hasProperPassengerSeats(false, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsPassenger: 1 },
+        property: '',
+      }),
+    ).toBe(false);
+    expect(
+      hasProperPassengerSeats(undefined, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsPassenger: 1 },
+        property: '',
+      }),
+    ).toBe(false);
+    expect(
+      hasProperPassengerSeats(null, {
+        value: undefined,
+        constraints: [],
+        targetName: '',
+        object: { seatsPassenger: 1 },
+        property: '',
+      }),
+    ).toBe(false);
+  });
+});