diff --git a/src/modules/request/dto/create-request.dto.ts b/src/modules/request/dto/create-request.dto.ts
index 8fc9313..ae2ae67 100644
--- a/src/modules/request/dto/create-request.dto.ts
+++ b/src/modules/request/dto/create-request.dto.ts
@@ -1,15 +1,34 @@
 import {
   IsString,
-  IsInt,
   IsArray,
   IsNumber,
   IsNotEmpty,
   ArrayMinSize,
   IsOptional,
+  Min,
+  ValidateNested,
 } from 'class-validator';
 import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
 import { Type } from 'class-transformer';
-import { IAttachment, IField } from '../interface/request.interface';
+import { IAttachment } from '../interface/request.interface';
+
+export class RequestItemDto {
+  @IsString()
+  @IsNotEmpty()
+  fieldId: string;
+
+  @IsString()
+  @IsNotEmpty()
+  value: string;
+}
+
+class AttachmentDto implements IAttachment {
+  @IsString()
+  type: string;
+
+  @IsString()
+  url: string;
+}
 
 export class CreateRequestItemDto {
   @IsString()
@@ -18,22 +37,27 @@ export class CreateRequestItemDto {
   productId: string;
 
   @IsNumber()
-  @ApiProperty()
+  @Min(1, { message: 'Quantity must be at least 1' })
+  @ApiProperty({ minimum: 1 })
   quantity: number;
 
-  @ApiPropertyOptional({ type: 'array', items: { type: 'object', properties: { fieldId: { type: 'number' }, value: { type: 'string' } } } })
+  @ApiPropertyOptional({ type: [RequestItemDto], description: 'Product attribute field values' })
   @IsOptional()
   @IsArray()
-  attributes?: IField[];
+  @ValidateNested({ each: true })
+  @Type(() => RequestItemDto)
+  attributes?: RequestItemDto[];
 
   @ApiPropertyOptional()
   @IsOptional()
   @IsString()
   description?: string;
 
-  @ApiPropertyOptional({ type: 'array', items: { type: 'object', properties: { type: { type: 'string' }, url: { type: 'string' } } } })
+  @ApiPropertyOptional({ type: [AttachmentDto] })
   @IsOptional()
   @IsArray()
+  @ValidateNested({ each: true })
+  @Type(() => AttachmentDto)
   attachments?: IAttachment[];
 }
 
@@ -46,8 +70,8 @@ export class CreateRequestDto {
       {
         productId: '01ARZ3NDEKTSV4RRFFQ69G5FAV',
         quantity: 100,
-        attributes: [{ fieldId: 1, value: 'blue' }],
-        attachments: [{ url: '', type: 'image' }],
+        attributes: [{ fieldId: 'field_01', value: 'blue' }],
+        attachments: [{ type: 'image', url: 'https://example.com/photo.jpg' }],
         description: 'توضیحات',
       },
     ],