diff --git a/src/components/accounting/DepositManagement/DepositDetailClientV2.tsx b/src/components/accounting/DepositManagement/DepositDetailClientV2.tsx
index ecb7e2c0..b5e646a5 100644
--- a/src/components/accounting/DepositManagement/DepositDetailClientV2.tsx
+++ b/src/components/accounting/DepositManagement/DepositDetailClientV2.tsx
@@ -12,6 +12,8 @@ import {
   createDeposit,
   updateDeposit,
   deleteDeposit,
+
+  getVendors,
 } from './actions';
 import { useDevFill, generateDepositData } from '@/components/dev';
 
@@ -31,9 +33,13 @@ export default function DepositDetailClientV2({
   const [isLoading, setIsLoading] = useState(initialMode !== 'create');
 
   // ===== DevFill: 자동 입력 기능 =====
-  useDevFill('deposit', useCallback(() => {
+  useDevFill('deposit', useCallback(async () => {
     if (initialMode === 'create') {
-      const mockData = generateDepositData();
+      // 거래처 목록 가져오기
+      const vendorResult = await getVendors();
+      const vendors = vendorResult.success ? vendorResult.data : undefined;
+
+      const mockData = generateDepositData({ vendors });
       setDeposit(mockData as unknown as DepositRecord);
       toast.success('입금 데이터가 자동 입력되었습니다.');
     }
diff --git a/src/components/accounting/WithdrawalManagement/WithdrawalDetailClientV2.tsx b/src/components/accounting/WithdrawalManagement/WithdrawalDetailClientV2.tsx
index da3db8cb..c2211b1a 100644
--- a/src/components/accounting/WithdrawalManagement/WithdrawalDetailClientV2.tsx
+++ b/src/components/accounting/WithdrawalManagement/WithdrawalDetailClientV2.tsx
@@ -12,6 +12,7 @@ import {
   createWithdrawal,
   updateWithdrawal,
   deleteWithdrawal,
+  getVendors,
 } from './actions';
 import { useDevFill, generateWithdrawalData } from '@/components/dev';
 
@@ -31,9 +32,13 @@ export default function WithdrawalDetailClientV2({
   const [isLoading, setIsLoading] = useState(initialMode !== 'create');
 
   // ===== DevFill: 자동 입력 기능 =====
-  useDevFill('withdrawal', useCallback(() => {
+  useDevFill('withdrawal', useCallback(async () => {
     if (initialMode === 'create') {
-      const mockData = generateWithdrawalData();
+      // 거래처 목록 가져오기
+      const vendorResult = await getVendors();
+      const vendors = vendorResult.success ? vendorResult.data : undefined;
+
+      const mockData = generateWithdrawalData({ vendors });
       setWithdrawal(mockData as unknown as WithdrawalRecord);
       toast.success('출금 데이터가 자동 입력되었습니다.');
     }
diff --git a/src/components/dev/generators/accountingData.ts b/src/components/dev/generators/accountingData.ts
index 85494de1..94d4ee51 100644
--- a/src/components/dev/generators/accountingData.ts
+++ b/src/components/dev/generators/accountingData.ts
@@ -83,7 +83,7 @@ export function generateDepositData(options: GenerateDepositDataOptions = {}): D
     depositAmount: randomInt(100000, 10000000),
     note: randomPick(DEPOSIT_NOTES),
     vendorId: vendor.id,
-    depositType: randomPick(DEPOSIT_TYPES.filter(t => t !== 'unset')), // unset 제외
+    depositType: 'unset', // 미설정으로 고정
   };
 }
 
@@ -142,7 +142,7 @@ export function generateWithdrawalData(options: GenerateWithdrawalDataOptions =
     withdrawalAmount: randomInt(50000, 5000000),
     note: randomPick(WITHDRAWAL_NOTES),
     vendorId: vendor.id,
-    withdrawalType: randomPick(WITHDRAWAL_TYPES.filter(t => t !== 'unset')), // unset 제외
+    withdrawalType: 'unset', // 미설정으로 고정
   };
 }