diff --git a/dictation_server/src/features/accounts/types/types.ts b/dictation_server/src/features/accounts/types/types.ts
index 6e45d8e..c587255 100644
--- a/dictation_server/src/features/accounts/types/types.ts
+++ b/dictation_server/src/features/accounts/types/types.ts
@@ -184,7 +184,7 @@ export class GetTypistGroupRequest {
   @ApiProperty()
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   typistGroupId: number;
 }
 export class GetTypistGroupResponse {
@@ -203,7 +203,7 @@ export class CreateTypistGroupRequest {
   @ArrayMinSize(1)
   @IsArray()
   @IsInt({ each: true })
-  @Min(0, { each: true })
+  @Min(1, { each: true })
   @IsUnique()
   typistIds: number[];
 }
@@ -219,7 +219,7 @@ export class UpdateTypistGroupRequest {
   @ArrayMinSize(1)
   @IsArray()
   @IsInt({ each: true })
-  @Min(0, { each: true })
+  @Min(1, { each: true })
   @IsUnique()
   typistIds: number[];
 }
@@ -227,7 +227,7 @@ export class UpdateTypistGroupRequestParam {
   @ApiProperty()
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   typistGroupId: number;
 }
 export class UpdateTypistGroupResponse {}
@@ -463,7 +463,7 @@ export class GetOptionItemsRequestParam {
   @ApiProperty({ description: 'Worktypeの内部ID' })
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   id: number;
 }
 
@@ -487,7 +487,7 @@ export class UpdateOptionItemsRequestParam {
   @ApiProperty({ description: 'Worktypeの内部ID' })
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   id: number;
 }
 
@@ -495,7 +495,7 @@ export class UpdateWorktypeRequestParam {
   @ApiProperty({ description: 'Worktypeの内部ID' })
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   id: number;
 }
 
@@ -503,7 +503,7 @@ export class DeleteWorktypeRequestParam {
   @ApiProperty({ description: 'Worktypeの内部ID' })
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   id: number;
 }
 
@@ -517,7 +517,7 @@ export class PostActiveWorktypeRequest {
   @IsOptional()
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   id?: number;
 }
 
diff --git a/dictation_server/src/features/auth/types/types.ts b/dictation_server/src/features/auth/types/types.ts
index c031508..023a982 100644
--- a/dictation_server/src/features/auth/types/types.ts
+++ b/dictation_server/src/features/auth/types/types.ts
@@ -1,10 +1,14 @@
 import { ApiProperty } from '@nestjs/swagger';
-import { IsInt } from 'class-validator';
+import { IsIn, IsInt, IsNotEmpty, IsString } from 'class-validator';
 
 export class TokenRequest {
   @ApiProperty()
+  @IsString()
+  @IsNotEmpty()
   idToken: string;
   @ApiProperty({ description: 'web or mobile or desktop' })
+  @IsIn(['web', 'mobile', 'desktop'], { message: 'invalid type' })
+  @IsNotEmpty()
   type: string;
 }
 export class TokenResponse {
diff --git a/dictation_server/src/features/files/types/types.ts b/dictation_server/src/features/files/types/types.ts
index 2fda838..3545a20 100644
--- a/dictation_server/src/features/files/types/types.ts
+++ b/dictation_server/src/features/files/types/types.ts
@@ -1,6 +1,17 @@
 import { ApiProperty } from '@nestjs/swagger';
 import { Type } from 'class-transformer';
-import { IsInt, Min } from 'class-validator';
+import {
+  ArrayMaxSize,
+  ArrayMinSize,
+  IsArray,
+  IsIn,
+  IsInt,
+  IsNotEmpty,
+  IsNumberString,
+  MaxLength,
+  Min,
+  MinLength,
+} from 'class-validator';
 
 export class AudioUploadLocationRequest {}
 
@@ -13,6 +24,9 @@ export class AudioUploadLocationResponse {
 
 export class AudioDownloadLocationRequest {
   @ApiProperty({ description: 'ODMSCloud上で管理する音声ファイルのID' })
+  @Type(() => Number)
+  @Min(1)
+  @IsInt()
   audioFileId: number;
 }
 
@@ -26,7 +40,7 @@ export class AudioDownloadLocationResponse {
 export class TemplateDownloadLocationRequest {
   @ApiProperty({ description: '文字起こし対象の音声ファイルID' })
   @Type(() => Number)
-  @Min(0)
+  @Min(1)
   @IsInt()
   audioFileId: number;
 }
@@ -43,40 +57,58 @@ export class TemplateUploadLocationResponse {
 
 export class AudioOptionItem {
   @ApiProperty({ minLength: 1, maxLength: 16 })
+  @MinLength(1)
+  @MaxLength(16)
   optionItemLabel: string;
   @ApiProperty({ minLength: 1, maxLength: 20 })
+  @MinLength(1)
+  @MaxLength(20)
   optionItemValue: string;
 }
 
 export class AudioUploadFinishedRequest {
   @ApiProperty({ description: 'アップロード先Blob Storage(ファイル名含む)' })
+  @IsNotEmpty()
   url: string;
   @ApiProperty({ description: '自分自身(ログイン認証)したAuthorID' })
+  @IsNotEmpty()
   authorId: string;
   @ApiProperty({ description: '音声ファイル名' })
+  @IsNotEmpty()
   fileName: string;
   @ApiProperty({
     description: '音声ファイルの録音時間（ミリ秒の整数値）',
   })
+  @IsNumberString()
+  @IsNotEmpty()
   duration: string;
   @ApiProperty({
     description:
       '音声ファイルの録音作成日時(開始日時)（yyyy-mm-ddThh:mm:ss.sss）',
   })
+  @IsNotEmpty()
   createdDate: string;
   @ApiProperty({
     description: '音声ファイルの録音作成終了日時（yyyy-mm-ddThh:mm:ss.sss）',
   })
+  @IsNotEmpty()
   finishedDate: string;
   @ApiProperty({
     description: '音声ファイルのアップロード日時（yyyy-mm-ddThh:mm:ss.sss）',
   })
+  @IsNotEmpty()
   uploadedDate: string;
   @ApiProperty({ description: '音声ファイルのファイルサイズ（Byte）' })
+  @Type(() => Number)
+  @IsInt()
+  @IsNotEmpty()
   fileSize: number;
   @ApiProperty({ description: '優先度 "00":Normal / "01":High' })
+  @IsIn(['00', '01'], { message: 'invalid priority' })
+  @IsNotEmpty()
   priority: string;
   @ApiProperty({ description: '録音形式: DSS/DS2(SP)/DS2(QP)' })
+  @IsNotEmpty()
   audioFormat: string;
   @ApiProperty()
   comment: string;
@@ -88,6 +120,9 @@ export class AudioUploadFinishedRequest {
     minItems: 10,
     description: '音声ファイルに紐づくOption Itemの一覧（10個固定）',
   })
+  @IsArray()
+  @ArrayMinSize(10)
+  @ArrayMaxSize(10)
   optionItemList: AudioOptionItem[];
   @ApiProperty()
   isEncrypted: boolean;
diff --git a/dictation_server/src/features/notification/types/types.ts b/dictation_server/src/features/notification/types/types.ts
index b19bf08..433ea59 100644
--- a/dictation_server/src/features/notification/types/types.ts
+++ b/dictation_server/src/features/notification/types/types.ts
@@ -1,5 +1,5 @@
 import { ApiProperty } from '@nestjs/swagger';
-import { IsIn } from 'class-validator';
+import { IsIn, IsNotEmpty, IsString } from 'class-validator';
 import { PNS } from '../../../constants';
 
 export class RegisterRequest {
@@ -9,6 +9,8 @@ export class RegisterRequest {
   })
   pns: string;
   @ApiProperty({ description: 'wnsのチャネルURI or apnsのデバイストークン' })
+  @IsString()
+  @IsNotEmpty()
   handler: string;
 }
 
diff --git a/dictation_server/src/features/tasks/types/types.ts b/dictation_server/src/features/tasks/types/types.ts
index 80cff57..69b7c1d 100644
--- a/dictation_server/src/features/tasks/types/types.ts
+++ b/dictation_server/src/features/tasks/types/types.ts
@@ -22,7 +22,6 @@ export class TasksRequest {
   })
   @IsInt()
   @Min(0)
-  @Type(() => Number)
   @IsOptional()
   @Type(() => Number)
   limit: number;
@@ -35,7 +34,6 @@ export class TasksRequest {
   })
   @IsInt()
   @Min(0)
-  @Type(() => Number)
   @IsOptional()
   @Type(() => Number)
   offset: number;
@@ -192,6 +190,7 @@ export class AudioNextRequest {
   @ApiProperty({ description: '文字起こし完了したタスクの音声ファイルID' })
   @Type(() => Number)
   @IsInt()
+  @Min(1)
   endedFileId: number;
 }
 
diff --git a/dictation_server/src/features/workflows/types/types.ts b/dictation_server/src/features/workflows/types/types.ts
index 87f77c0..e3e34df 100644
--- a/dictation_server/src/features/workflows/types/types.ts
+++ b/dictation_server/src/features/workflows/types/types.ts
@@ -53,19 +53,19 @@ export class CreateWorkflowsRequest {
   @ApiProperty({ description: 'Authorの内部ID' })
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   authorId: number;
   @ApiProperty({ description: 'Worktypeの内部ID', required: false })
   @IsOptional()
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   worktypeId?: number;
   @ApiProperty({ description: 'テンプレートの内部ID', required: false })
   @IsOptional()
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   templateId?: number;
   @ApiProperty({
     description: 'ルーティング候補のタイピストユーザー/タイピストグループ',
@@ -84,7 +84,7 @@ export class UpdateWorkflowRequestParam {
   @ApiProperty({ description: 'ワークフローの内部ID' })
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   workflowId: number;
 }
 
@@ -92,19 +92,19 @@ export class UpdateWorkflowRequest {
   @ApiProperty({ description: 'Authorの内部ID' })
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   authorId: number;
   @ApiProperty({ description: 'Worktypeの内部ID', required: false })
   @IsOptional()
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   worktypeId?: number;
   @ApiProperty({ description: 'テンプレートの内部ID', required: false })
   @IsOptional()
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   templateId?: number;
   @ApiProperty({
     description: 'ルーティング候補のタイピストユーザー/タイピストグループ',
@@ -123,7 +123,7 @@ export class DeleteWorkflowRequestParam {
   @ApiProperty({ description: 'ワークフローの内部ID' })
   @Type(() => Number)
   @IsInt()
-  @Min(0)
+  @Min(1)
   workflowId: number;
 }