diff --git a/app/Http/Controllers/Api/V1/DashboardController.php b/app/Http/Controllers/Api/V1/DashboardController.php
index 0a6d631..48458a3 100644
--- a/app/Http/Controllers/Api/V1/DashboardController.php
+++ b/app/Http/Controllers/Api/V1/DashboardController.php
@@ -44,4 +44,4 @@ public function approvals(DashboardApprovalsRequest $request): JsonResponse
 
         return ApiResponse::handle(['data' => $data], __('message.fetched'));
     }
-}
\ No newline at end of file
+}
diff --git a/app/Http/Requests/V1/Dashboard/DashboardApprovalsRequest.php b/app/Http/Requests/V1/Dashboard/DashboardApprovalsRequest.php
index 147700a..6f00141 100644
--- a/app/Http/Requests/V1/Dashboard/DashboardApprovalsRequest.php
+++ b/app/Http/Requests/V1/Dashboard/DashboardApprovalsRequest.php
@@ -25,4 +25,4 @@ public function messages(): array
             'limit.max' => __('error.validation.max', ['max' => 50]),
         ];
     }
-}
\ No newline at end of file
+}
diff --git a/app/Http/Requests/V1/Dashboard/DashboardChartsRequest.php b/app/Http/Requests/V1/Dashboard/DashboardChartsRequest.php
index dca0959..92ffdfc 100644
--- a/app/Http/Requests/V1/Dashboard/DashboardChartsRequest.php
+++ b/app/Http/Requests/V1/Dashboard/DashboardChartsRequest.php
@@ -24,4 +24,4 @@ public function messages(): array
             'period.in' => __('error.dashboard.invalid_period'),
         ];
     }
-}
\ No newline at end of file
+}
diff --git a/app/Services/DashboardService.php b/app/Services/DashboardService.php
index 607f746..5423370 100644
--- a/app/Services/DashboardService.php
+++ b/app/Services/DashboardService.php
@@ -351,4 +351,4 @@ private function getMyPendingDrafts(int $tenantId, int $userId, int $limit): arr
             ];
         })->toArray();
     }
-}
\ No newline at end of file
+}
diff --git a/app/Swagger/v1/DashboardApi.php b/app/Swagger/v1/DashboardApi.php
index 7816429..edabede 100644
--- a/app/Swagger/v1/DashboardApi.php
+++ b/app/Swagger/v1/DashboardApi.php
@@ -40,19 +40,25 @@
  *     @OA\Property(property="start_date", type="string", format="date", example="2024-12-17", description="시작일"),
  *     @OA\Property(property="end_date", type="string", format="date", example="2025-01-15", description="종료일"),
  *     @OA\Property(property="deposit_trend", type="array", description="입금 추이",
+ *
  *         @OA\Items(type="object",
+ *
  *             @OA\Property(property="date", type="string", format="date", example="2025-01-15"),
  *             @OA\Property(property="amount", type="number", format="float", example=5000000)
  *         )
  *     ),
  *     @OA\Property(property="withdrawal_trend", type="array", description="출금 추이",
+ *
  *         @OA\Items(type="object",
+ *
  *             @OA\Property(property="date", type="string", format="date", example="2025-01-15"),
  *             @OA\Property(property="amount", type="number", format="float", example=3000000)
  *         )
  *     ),
  *     @OA\Property(property="sales_by_client", type="array", description="거래처별 매출 (상위 10개)",
+ *
  *         @OA\Items(type="object",
+ *
  *             @OA\Property(property="client_id", type="integer", example=1),
  *             @OA\Property(property="client_name", type="string", example="(주)테스트"),
  *             @OA\Property(property="amount", type="number", format="float", example=15000000)
@@ -66,7 +72,9 @@
  *     description="대시보드 결재 현황",
  *
  *     @OA\Property(property="pending_approvals", type="array", description="결재 대기 문서 (내가 결재할 문서)",
+ *
  *         @OA\Items(type="object",
+ *
  *             @OA\Property(property="id", type="integer", example=1, description="결재문서 ID"),
  *             @OA\Property(property="title", type="string", example="출장 신청서", description="제목"),
  *             @OA\Property(property="drafter_name", type="string", example="홍길동", description="기안자명"),
@@ -75,7 +83,9 @@
  *         )
  *     ),
  *     @OA\Property(property="my_drafts", type="array", description="내가 기안한 진행중인 문서",
+ *
  *         @OA\Items(type="object",
+ *
  *             @OA\Property(property="id", type="integer", example=2, description="결재문서 ID"),
  *             @OA\Property(property="title", type="string", example="휴가 신청서", description="제목"),
  *             @OA\Property(property="status", type="string", example="pending", description="상태"),
@@ -101,6 +111,7 @@ class DashboardApi
      *         description="성공",
      *
      *         @OA\JsonContent(
+     *
      *             @OA\Property(property="success", type="boolean", example=true),
      *             @OA\Property(property="message", type="string", example="데이터를 조회했습니다."),
      *             @OA\Property(property="data", ref="#/components/schemas/DashboardSummary")
@@ -135,6 +146,7 @@ public function summary() {}
      *         description="성공",
      *
      *         @OA\JsonContent(
+     *
      *             @OA\Property(property="success", type="boolean", example=true),
      *             @OA\Property(property="message", type="string", example="데이터를 조회했습니다."),
      *             @OA\Property(property="data", ref="#/components/schemas/DashboardCharts")
@@ -170,6 +182,7 @@ public function charts() {}
      *         description="성공",
      *
      *         @OA\JsonContent(
+     *
      *             @OA\Property(property="success", type="boolean", example=true),
      *             @OA\Property(property="message", type="string", example="데이터를 조회했습니다."),
      *             @OA\Property(property="data", ref="#/components/schemas/DashboardApprovals")
@@ -181,4 +194,4 @@ public function charts() {}
      * )
      */
     public function approvals() {}
-}
\ No newline at end of file
+}
diff --git a/lang/ko/error.php b/lang/ko/error.php
index 269235c..be00441 100644
--- a/lang/ko/error.php
+++ b/lang/ko/error.php
@@ -228,4 +228,9 @@
         'user_not_found' => '직원 정보를 찾을 수 없습니다.',
         'no_base_salary' => '기본급이 설정되지 않았습니다.',
     ],
+
+    // 대시보드 관련
+    'dashboard' => [
+        'invalid_period' => '기간은 week, month, quarter 중 하나여야 합니다.',
+    ],
 ];
diff --git a/lang/ko/message.php b/lang/ko/message.php
index c9e0dff..3d8ca2a 100644
--- a/lang/ko/message.php
+++ b/lang/ko/message.php
@@ -288,4 +288,9 @@
         'fetched' => '급여 설정을 조회했습니다.',
         'updated' => '급여 설정이 수정되었습니다.',
     ],
+
+    // 대시보드
+    'dashboard' => [
+        'unknown_client' => '미지정',
+    ],
 ];