diff --git a/backend-node/src/controllers/dataflowExecutionController.ts b/backend-node/src/controllers/dataflowExecutionController.ts
index 68ae2507..766ba90c 100644
--- a/backend-node/src/controllers/dataflowExecutionController.ts
+++ b/backend-node/src/controllers/dataflowExecutionController.ts
@@ -6,11 +6,9 @@
 
 import { Request, Response } from "express";
 import { AuthenticatedRequest } from "../types/auth";
-import { PrismaClient } from "@prisma/client";
+import prisma from "../config/database";
 import logger from "../utils/logger";
 
-const prisma = new PrismaClient();
-
 /**
  * 데이터 액션 실행
  */
@@ -102,16 +100,34 @@ async function executeExternalDatabaseAction(
   connection: any
 ): Promise<any> {
   try {
-    // TODO: 외부 데이터베이스 연결 및 실행 로직 구현
-    // 현재는 로그만 출력하고 성공으로 처리
     logger.info(`외부 DB 액션 실행: ${connection.name} (${connection.host}:${connection.port})`);
     logger.info(`테이블: ${tableName}, 액션: ${actionType}`, data);
 
-    // 임시 성공 응답
+    // 🔥 실제 외부 DB 연결 및 실행 로직 구현
+    const { MultiConnectionQueryService } = await import('../services/multiConnectionQueryService');
+    const queryService = new MultiConnectionQueryService();
+
+    let result;
+    switch (actionType.toLowerCase()) {
+      case 'insert':
+        result = await queryService.insertDataToConnection(connection.id, tableName, data);
+        logger.info(`외부 DB INSERT 성공:`, result);
+        break;
+      case 'update':
+        // TODO: UPDATE 로직 구현 (조건 필요)
+        throw new Error('UPDATE 액션은 아직 지원되지 않습니다. 조건 설정이 필요합니다.');
+      case 'delete':
+        // TODO: DELETE 로직 구현 (조건 필요)
+        throw new Error('DELETE 액션은 아직 지원되지 않습니다. 조건 설정이 필요합니다.');
+      default:
+        throw new Error(`지원하지 않는 액션 타입: ${actionType}`);
+    }
+
     return {
       success: true,
       message: `외부 DB 액션 실행 완료: ${actionType} on ${tableName}`,
       connection: connection.name,
+      data: result,
       affectedRows: 1,
     };
   } catch (error) {
diff --git a/backend-node/src/database/MSSQLConnector.ts b/backend-node/src/database/MSSQLConnector.ts
index fc1c195c..d382c87f 100644
--- a/backend-node/src/database/MSSQLConnector.ts
+++ b/backend-node/src/database/MSSQLConnector.ts
@@ -77,10 +77,17 @@ export class MSSQLConnector implements DatabaseConnector {
     }
   }
 
-  async executeQuery(query: string): Promise<QueryResult> {
+  async executeQuery(query: string, params: any[] = []): Promise<QueryResult> {
     try {
       await this.connect();
-      const result = await this.pool!.request().query(query);
+      const request = this.pool!.request();
+      
+      // 파라미터 바인딩 (SQL Server는 @param1, @param2 형식이지만 여기서는 ? 사용)
+      params.forEach((param, index) => {
+        request.input(`param${index + 1}`, param);
+      });
+      
+      const result = await request.query(query);
       return {
         rows: result.recordset,
         rowCount: result.rowsAffected[0],
diff --git a/backend-node/src/database/MariaDBConnector.ts b/backend-node/src/database/MariaDBConnector.ts
index f023bfc7..3f469330 100644
--- a/backend-node/src/database/MariaDBConnector.ts
+++ b/backend-node/src/database/MariaDBConnector.ts
@@ -61,13 +61,14 @@ export class MariaDBConnector implements DatabaseConnector {
     }
   }
 
-  async executeQuery(query: string): Promise<QueryResult> {
+  async executeQuery(query: string, params: any[] = []): Promise<QueryResult> {
     try {
       await this.connect();
-      const [rows, fields] = await this.connection!.query(query);
+      const [rows, fields] = await this.connection!.query(query, params);
       await this.disconnect();
       return {
         rows: rows as any[],
+        rowCount: Array.isArray(rows) ? rows.length : 0,
         fields: fields as any[],
       };
     } catch (error: any) {
diff --git a/backend-node/src/database/MySQLConnector.ts b/backend-node/src/database/MySQLConnector.ts
index 450e5472..ea9b633a 100644
--- a/backend-node/src/database/MySQLConnector.ts
+++ b/backend-node/src/database/MySQLConnector.ts
@@ -76,13 +76,13 @@ export class MySQLConnector implements DatabaseConnector {
     }
   }
 
-  async executeQuery(query: string): Promise<QueryResult> {
+  async executeQuery(query: string, params: any[] = []): Promise<QueryResult> {
     if (!this.connection) {
       await this.connect();
     }
 
     try {
-      const [rows, fields] = await this.connection!.query(query);
+      const [rows, fields] = await this.connection!.query(query, params);
       return {
         rows: rows as any[],
         rowCount: Array.isArray(rows) ? rows.length : 0,
diff --git a/backend-node/src/database/PostgreSQLConnector.ts b/backend-node/src/database/PostgreSQLConnector.ts
index 820e3fd1..52f9ce19 100644
--- a/backend-node/src/database/PostgreSQLConnector.ts
+++ b/backend-node/src/database/PostgreSQLConnector.ts
@@ -117,10 +117,10 @@ export class PostgreSQLConnector implements DatabaseConnector {
     }
   }
 
-  async executeQuery(query: string): Promise<QueryResult> {
+  async executeQuery(query: string, params: any[] = []): Promise<QueryResult> {
     try {
       await this.connect();
-      const result = await this.client!.query(query);
+      const result = await this.client!.query(query, params);
       await this.disconnect();
       return {
         rows: result.rows,
diff --git a/backend-node/src/services/authService.ts b/backend-node/src/services/authService.ts
index 1502b97f..357a90c7 100644
--- a/backend-node/src/services/authService.ts
+++ b/backend-node/src/services/authService.ts
@@ -1,14 +1,12 @@
 // 인증 서비스
 // 기존 Java LoginService를 Node.js로 포팅
 
-import { PrismaClient } from "@prisma/client";
+import prisma from "../config/database";
 import { JwtUtils } from "../utils/jwtUtils";
 import { EncryptUtil } from "../utils/encryptUtil";
 import { PersonBean, LoginResult, LoginLogData } from "../types/auth";
 import { logger } from "../utils/logger";
 
-const prisma = new PrismaClient();
-
 export class AuthService {
   /**
    * 기존 Java LoginService.loginPwdCheck() 메서드 포팅
diff --git a/backend-node/src/services/commonCodeService.ts b/backend-node/src/services/commonCodeService.ts
index fca352ff..48f24cda 100644
--- a/backend-node/src/services/commonCodeService.ts
+++ b/backend-node/src/services/commonCodeService.ts
@@ -1,8 +1,7 @@
 import { PrismaClient } from "@prisma/client";
+import prisma from "../config/database";
 import { logger } from "../utils/logger";
 
-const prisma = new PrismaClient();
-
 export interface CodeCategory {
   category_code: string;
   category_name: string;
diff --git a/backend-node/src/services/dataService.ts b/backend-node/src/services/dataService.ts
index fc5935a8..f4ef2e1b 100644
--- a/backend-node/src/services/dataService.ts
+++ b/backend-node/src/services/dataService.ts
@@ -1,6 +1,5 @@
 import { PrismaClient } from "@prisma/client";
-
-const prisma = new PrismaClient();
+import prisma from "../config/database";
 
 interface GetTableDataParams {
   tableName: string;
diff --git a/backend-node/src/services/dataflowDiagramService.ts b/backend-node/src/services/dataflowDiagramService.ts
index 427b60c5..8531ec3d 100644
--- a/backend-node/src/services/dataflowDiagramService.ts
+++ b/backend-node/src/services/dataflowDiagramService.ts
@@ -1,8 +1,7 @@
-import { PrismaClient, Prisma } from "@prisma/client";
+import { Prisma } from "@prisma/client";
+import prisma from "../config/database";
 import { logger } from "../utils/logger";
 
-const prisma = new PrismaClient();
-
 // 타입 정의
 interface CreateDataflowDiagramData {
   diagram_name: string;
diff --git a/backend-node/src/services/entityJoinService.ts b/backend-node/src/services/entityJoinService.ts
index b88c0c8b..3b00ee5c 100644
--- a/backend-node/src/services/entityJoinService.ts
+++ b/backend-node/src/services/entityJoinService.ts
@@ -1,4 +1,5 @@
 import { PrismaClient } from "@prisma/client";
+import prisma from "../config/database";
 import { logger } from "../utils/logger";
 import {
   EntityJoinConfig,
@@ -7,8 +8,6 @@ import {
 } from "../types/tableManagement";
 import { referenceCacheService } from "./referenceCacheService";
 
-const prisma = new PrismaClient();
-
 /**
  * Entity 조인 기능을 제공하는 서비스
  * ID값을 의미있는 데이터로 자동 변환하는 스마트 테이블 시스템
diff --git a/backend-node/src/services/externalCallConfigService.ts b/backend-node/src/services/externalCallConfigService.ts
index 2ad6d629..d1120bc6 100644
--- a/backend-node/src/services/externalCallConfigService.ts
+++ b/backend-node/src/services/externalCallConfigService.ts
@@ -1,8 +1,6 @@
-import { PrismaClient } from "@prisma/client";
+import prisma from "../config/database";
 import { logger } from "../utils/logger";
 
-const prisma = new PrismaClient();
-
 // 외부 호출 설정 타입 정의
 export interface ExternalCallConfig {
   id?: number;
diff --git a/backend-node/src/services/externalDbConnectionService.ts b/backend-node/src/services/externalDbConnectionService.ts
index 96ece2d9..0d5fa1bc 100644
--- a/backend-node/src/services/externalDbConnectionService.ts
+++ b/backend-node/src/services/externalDbConnectionService.ts
@@ -10,6 +10,7 @@ import {
 } from "../types/externalDbTypes";
 import { PasswordEncryption } from "../utils/passwordEncryption";
 import { DatabaseConnectorFactory } from "../database/DatabaseConnectorFactory";
+import logger from "../utils/logger";
 
 export class ExternalDbConnectionService {
   /**
@@ -694,7 +695,8 @@ export class ExternalDbConnectionService {
    */
   static async executeQuery(
     id: number,
-    query: string
+    query: string,
+    params: any[] = []
   ): Promise<ApiResponse<any[]>> {
     try {
       // 연결 정보 조회
@@ -751,7 +753,20 @@ export class ExternalDbConnectionService {
 
       let result;
       try {
-        result = await connector.executeQuery(query);
+        const dbType = connection.db_type?.toLowerCase() || 'postgresql';
+        
+        // 파라미터 바인딩을 지원하는 DB 타입들
+        const supportedDbTypes = ['oracle', 'mysql', 'mariadb', 'postgresql', 'sqlite', 'sqlserver', 'mssql'];
+        
+        if (supportedDbTypes.includes(dbType) && params.length > 0) {
+          // 파라미터 바인딩 지원 DB: 안전한 파라미터 바인딩 사용
+          logger.info(`${dbType.toUpperCase()} 파라미터 바인딩 실행:`, { query, params });
+          result = await (connector as any).executeQuery(query, params);
+        } else {
+          // 파라미터가 없거나 지원하지 않는 DB: 기본 방식 사용
+          logger.info(`${dbType.toUpperCase()} 기본 쿼리 실행:`, { query });
+          result = await connector.executeQuery(query);
+        }
       } finally {
         // 🔧 연결 해제 추가 - 메모리 누수 방지
         await DatabaseConnectorFactory.closeConnector(id, connection.db_type);
diff --git a/backend-node/src/services/layoutService.ts b/backend-node/src/services/layoutService.ts
index 0440f21a..374e4e96 100644
--- a/backend-node/src/services/layoutService.ts
+++ b/backend-node/src/services/layoutService.ts
@@ -1,4 +1,5 @@
 import { PrismaClient } from "@prisma/client";
+import prisma from "../config/database";
 import {
   CreateLayoutRequest,
   UpdateLayoutRequest,
@@ -7,8 +8,6 @@ import {
   LayoutCategory,
 } from "../types/layout";
 
-const prisma = new PrismaClient();
-
 // JSON 데이터를 안전하게 파싱하는 헬퍼 함수
 function safeJSONParse(data: any): any {
   if (data === null || data === undefined) {
diff --git a/backend-node/src/services/multiConnectionQueryService.ts b/backend-node/src/services/multiConnectionQueryService.ts
index 22ed667f..5ce9ca68 100644
--- a/backend-node/src/services/multiConnectionQueryService.ts
+++ b/backend-node/src/services/multiConnectionQueryService.ts
@@ -144,21 +144,133 @@ export class MultiConnectionQueryService {
       }
       const connection = connectionResult.data;
 
-      // INSERT 쿼리 구성
+      // INSERT 쿼리 구성 (DB 타입별 처리)
       const columns = Object.keys(data);
-      const values = Object.values(data);
-      const placeholders = values.map((_, index) => `$${index + 1}`).join(", ");
+      let values = Object.values(data);
+      
+      // Oracle의 경우 테이블 스키마 확인 및 데이터 타입 변환 처리
+      if (connection.db_type?.toLowerCase() === 'oracle') {
+        try {
+          // Oracle 테이블 스키마 조회
+          const schemaQuery = `
+            SELECT COLUMN_NAME, DATA_TYPE, NULLABLE, DATA_DEFAULT
+            FROM USER_TAB_COLUMNS 
+            WHERE TABLE_NAME = UPPER('${tableName}')
+            ORDER BY COLUMN_ID
+          `;
+          
+          logger.info(`🔍 Oracle 테이블 스키마 조회: ${schemaQuery}`);
+          
+          const schemaResult = await ExternalDbConnectionService.executeQuery(
+            connectionId,
+            schemaQuery
+          );
+          
+          if (schemaResult.success && schemaResult.data) {
+            logger.info(`📋 Oracle 테이블 ${tableName} 스키마:`);
+            schemaResult.data.forEach((col: any) => {
+              logger.info(`  - ${col.COLUMN_NAME}: ${col.DATA_TYPE}, NULL: ${col.NULLABLE}, DEFAULT: ${col.DATA_DEFAULT || 'None'}`);
+            });
+            
+            // 필수 컬럼 중 누락된 컬럼이 있는지 확인 (기본값이 없는 NOT NULL 컬럼만)
+            const providedColumns = columns.map(col => col.toUpperCase());
+            const missingRequiredColumns = schemaResult.data.filter((schemaCol: any) => 
+              schemaCol.NULLABLE === 'N' && 
+              !schemaCol.DATA_DEFAULT && 
+              !providedColumns.includes(schemaCol.COLUMN_NAME)
+            );
+            
+            if (missingRequiredColumns.length > 0) {
+              const missingNames = missingRequiredColumns.map((col: any) => col.COLUMN_NAME);
+              logger.error(`❌ 필수 컬럼 누락: ${missingNames.join(', ')}`);
+              throw new Error(`필수 컬럼이 누락되었습니다: ${missingNames.join(', ')}`);
+            }
+            
+            logger.info(`✅ 스키마 검증 통과: 모든 필수 컬럼이 제공되었거나 기본값이 있습니다.`);
+          }
+        } catch (schemaError) {
+          logger.warn(`⚠️ 스키마 조회 실패 (계속 진행): ${schemaError}`);
+        }
+        
+        values = values.map(value => {
+          // null이나 undefined는 그대로 유지
+          if (value === null || value === undefined) {
+            return value;
+          }
+          
+          // 숫자로 변환 가능한 문자열은 숫자로 변환
+          if (typeof value === 'string' && value.trim() !== '') {
+            const numValue = Number(value);
+            if (!isNaN(numValue)) {
+              logger.info(`🔄 Oracle 데이터 타입 변환: "${value}" (string) → ${numValue} (number)`);
+              return numValue;
+            }
+          }
+          
+          return value;
+        });
+      }
+      
+      let query: string;
+      let queryParams: any[];
+      const dbType = connection.db_type?.toLowerCase() || 'postgresql';
 
-      const query = `
-        INSERT INTO ${tableName} (${columns.join(", ")})
-        VALUES (${placeholders})
-        RETURNING *
-      `;
+      switch (dbType) {
+        case 'oracle':
+          // Oracle: :1, :2 스타일 바인딩 사용, RETURNING 미지원
+          const oraclePlaceholders = values.map((_, index) => `:${index + 1}`).join(", ");
+          query = `INSERT INTO ${tableName} (${columns.join(", ")}) VALUES (${oraclePlaceholders})`;
+          queryParams = values;
+          logger.info(`🔍 Oracle INSERT 상세 정보:`);
+          logger.info(`  - 테이블: ${tableName}`);
+          logger.info(`  - 컬럼: ${JSON.stringify(columns)}`);
+          logger.info(`  - 값: ${JSON.stringify(values)}`);
+          logger.info(`  - 쿼리: ${query}`);
+          logger.info(`  - 파라미터: ${JSON.stringify(queryParams)}`);
+          logger.info(`  - 데이터 타입: ${JSON.stringify(values.map(v => typeof v))}`);
+          break;
+
+        case 'mysql':
+        case 'mariadb':
+          // MySQL/MariaDB: ? 스타일 바인딩 사용, RETURNING 미지원
+          const mysqlPlaceholders = values.map(() => '?').join(", ");
+          query = `INSERT INTO ${tableName} (${columns.join(", ")}) VALUES (${mysqlPlaceholders})`;
+          queryParams = values;
+          logger.info(`MySQL/MariaDB INSERT 쿼리:`, { query, params: queryParams });
+          break;
+
+        case 'sqlserver':
+        case 'mssql':
+          // SQL Server: @param1, @param2 스타일 바인딩 사용
+          const sqlServerPlaceholders = values.map((_, index) => `@param${index + 1}`).join(", ");
+          query = `INSERT INTO ${tableName} (${columns.join(", ")}) VALUES (${sqlServerPlaceholders})`;
+          queryParams = values;
+          logger.info(`SQL Server INSERT 쿼리:`, { query, params: queryParams });
+          break;
+
+        case 'sqlite':
+          // SQLite: ? 스타일 바인딩 사용, RETURNING 지원 (3.35.0+)
+          const sqlitePlaceholders = values.map(() => '?').join(", ");
+          query = `INSERT INTO ${tableName} (${columns.join(", ")}) VALUES (${sqlitePlaceholders}) RETURNING *`;
+          queryParams = values;
+          logger.info(`SQLite INSERT 쿼리:`, { query, params: queryParams });
+          break;
+
+        case 'postgresql':
+        default:
+          // PostgreSQL: $1, $2 스타일 바인딩 사용, RETURNING 지원
+          const pgPlaceholders = values.map((_, index) => `$${index + 1}`).join(", ");
+          query = `INSERT INTO ${tableName} (${columns.join(", ")}) VALUES (${pgPlaceholders}) RETURNING *`;
+          queryParams = values;
+          logger.info(`PostgreSQL INSERT 쿼리:`, { query, params: queryParams });
+          break;
+      }
 
       // 외부 DB에서 쿼리 실행
       const result = await ExternalDbConnectionService.executeQuery(
         connectionId,
-        query
+        query,
+        queryParams
       );
 
       if (!result.success || !result.data) {
diff --git a/frontend/components/dataflow/connection/redesigned/DataConnectionDesigner.tsx b/frontend/components/dataflow/connection/redesigned/DataConnectionDesigner.tsx
index 7a72d0d0..db25934f 100644
--- a/frontend/components/dataflow/connection/redesigned/DataConnectionDesigner.tsx
+++ b/frontend/components/dataflow/connection/redesigned/DataConnectionDesigner.tsx
@@ -575,40 +575,86 @@ const DataConnectionDesigner: React.FC<DataConnectionDesignerProps> = ({
       setState((prev) => ({ ...prev, isLoading: true }));
 
       try {
-        // 실제 저장 로직 구현
-        const saveData = {
+        // 실제 저장 로직 구현 - connectionType에 따라 필요한 설정만 포함
+        let saveData: any = {
           relationshipName: state.relationshipName,
           description: state.description,
           connectionType: state.connectionType,
-          // 외부호출인 경우 테이블 정보는 선택사항
-          fromConnection: state.connectionType === "external_call" ? null : state.fromConnection,
-          toConnection: state.connectionType === "external_call" ? null : state.toConnection,
-          fromTable: state.connectionType === "external_call" ? null : state.fromTable,
-          toTable: state.connectionType === "external_call" ? null : state.toTable,
-          // 🔧 멀티 액션 그룹 데이터 포함
-          actionGroups: state.connectionType === "external_call" ? [] : state.actionGroups,
-          groupsLogicalOperator: state.groupsLogicalOperator,
-          // 외부호출 설정 포함
-          externalCallConfig: state.externalCallConfig,
-          // 기존 호환성을 위한 필드들 (첫 번째 액션 그룹의 첫 번째 액션에서 추출)
-          actionType:
-            state.connectionType === "external_call"
-              ? "external_call"
-              : state.actionGroups[0]?.actions[0]?.actionType || state.actionType || "insert",
-          controlConditions: state.connectionType === "external_call" ? [] : state.controlConditions,
-          actionConditions:
-            state.connectionType === "external_call"
-              ? []
-              : state.actionGroups[0]?.actions[0]?.conditions || state.actionConditions || [],
-          fieldMappings:
-            state.connectionType === "external_call"
-              ? []
-              : state.actionGroups[0]?.actions[0]?.fieldMappings || state.fieldMappings || [],
         };
 
+        if (state.connectionType === "external_call") {
+          // 외부호출 타입인 경우: 외부호출 설정만 포함
+          console.log("💾 외부호출 타입 저장 - 외부호출 설정만 포함");
+          saveData = {
+            ...saveData,
+            // 외부호출 관련 설정만 포함
+            externalCallConfig: state.externalCallConfig,
+            actionType: "external_call",
+            // 데이터 저장 관련 설정은 제외 (null/빈 배열로 설정)
+            fromConnection: null,
+            toConnection: null,
+            fromTable: null,
+            toTable: null,
+            actionGroups: [],
+            controlConditions: [],
+            actionConditions: [],
+            fieldMappings: [],
+          };
+        } else if (state.connectionType === "data_save") {
+          // 데이터 저장 타입인 경우: 데이터 저장 설정만 포함
+          console.log("💾 데이터 저장 타입 저장 - 데이터 저장 설정만 포함");
+          saveData = {
+            ...saveData,
+            // 데이터 저장 관련 설정만 포함
+            fromConnection: state.fromConnection,
+            toConnection: state.toConnection,
+            fromTable: state.fromTable,
+            toTable: state.toTable,
+            actionGroups: state.actionGroups,
+            groupsLogicalOperator: state.groupsLogicalOperator,
+            controlConditions: state.controlConditions,
+            // 기존 호환성을 위한 필드들 (첫 번째 액션 그룹의 첫 번째 액션에서 추출)
+            actionType: state.actionGroups[0]?.actions[0]?.actionType || state.actionType || "insert",
+            actionConditions: state.actionGroups[0]?.actions[0]?.conditions || state.actionConditions || [],
+            fieldMappings: state.actionGroups[0]?.actions[0]?.fieldMappings || state.fieldMappings || [],
+            // 외부호출 관련 설정은 제외 (null로 설정)
+            externalCallConfig: null,
+          };
+        }
+
         console.log("💾 직접 저장 시작:", { saveData, diagramId, isEdit: !!diagramId });
 
-        // 외부호출인 경우 external-call-configs에 설정 저장
+        // 데이터 저장 타입인 경우 기존 외부호출 설정 정리
+        if (state.connectionType === "data_save" && diagramId) {
+          console.log("🧹 데이터 저장 타입으로 변경 - 기존 외부호출 설정 정리");
+          try {
+            const { ExternalCallConfigAPI } = await import("@/lib/api/externalCallConfig");
+            
+            // 기존 외부호출 설정이 있는지 확인하고 삭제 또는 비활성화
+            const existingConfigs = await ExternalCallConfigAPI.getConfigs({
+              company_code: "*",
+              is_active: "Y",
+            });
+            
+            const existingConfig = existingConfigs.data?.find(
+              (config: any) => config.config_name === (state.relationshipName || "외부호출 설정")
+            );
+            
+            if (existingConfig) {
+              console.log("🗑️ 기존 외부호출 설정 비활성화:", existingConfig.id);
+              // 설정을 비활성화 (삭제하지 않고 is_active를 'N'으로 변경)
+              await ExternalCallConfigAPI.updateConfig(existingConfig.id, {
+                ...existingConfig,
+                is_active: "N",
+                updated_at: new Date().toISOString(),
+              });
+            }
+          } catch (cleanupError) {
+            console.warn("⚠️ 외부호출 설정 정리 실패 (무시하고 계속):", cleanupError);
+          }
+        }
+
+        // 외부호출인 경우에만 external-call-configs에 설정 저장
         if (state.connectionType === "external_call" && state.externalCallConfig) {
           try {
             const { ExternalCallConfigAPI } = await import("@/lib/api/externalCallConfig");
diff --git a/frontend/lib/utils/buttonActions.ts b/frontend/lib/utils/buttonActions.ts
index 081cf93a..264bd039 100644
--- a/frontend/lib/utils/buttonActions.ts
+++ b/frontend/lib/utils/buttonActions.ts
@@ -784,7 +784,21 @@ export class ButtonActionExecutor {
       // 🔥 새로운 버튼 액션 실행 시스템 사용
       if (config.dataflowConfig?.controlMode === "relationship" && config.dataflowConfig?.relationshipConfig) {
         console.log("🔗 관계 기반 제어 실행:", config.dataflowConfig.relationshipConfig);
+
+        // 🔥 table-selection 모드일 때 선택된 행 데이터를 formData에 병합
+        let mergedFormData = { ...context.formData } || {};
         
+        if (controlDataSource === "table-selection" && context.selectedRowsData && context.selectedRowsData.length > 0) {
+          // 선택된 첫 번째 행의 데이터를 formData에 병합
+          const selectedRowData = context.selectedRowsData[0];
+          mergedFormData = { ...mergedFormData, ...selectedRowData };
+          console.log("🔄 선택된 행 데이터를 formData에 병합:", {
+            originalFormData: context.formData,
+            selectedRowData,
+            mergedFormData,
+          });
+        }
+
         // 새로운 ImprovedButtonActionExecutor 사용
         const buttonConfig = {
           actionType: config.type,
@@ -794,10 +808,10 @@ export class ButtonActionExecutor {
 
         const executionResult = await ImprovedButtonActionExecutor.executeButtonAction(
           buttonConfig,
-          context.formData || {},
+          mergedFormData,
           {
             buttonId: context.buttonId || "unknown",
-            screenId: context.screenId || "unknown", 
+            screenId: context.screenId || "unknown",
             userId: context.userId || "unknown",
             companyCode: context.companyCode || "*",
             startTime: Date.now(),
diff --git a/frontend/lib/utils/improvedButtonActionExecutor.ts b/frontend/lib/utils/improvedButtonActionExecutor.ts
index 6c02172e..fed8a636 100644
--- a/frontend/lib/utils/improvedButtonActionExecutor.ts
+++ b/frontend/lib/utils/improvedButtonActionExecutor.ts
@@ -645,11 +645,27 @@ export class ImprovedButtonActionExecutor {
     formData: Record<string, any>,
     context: ButtonExecutionContext
   ): boolean {
+    console.log(`🔍 조건 평가 시작:`, {
+      conditions,
+      formDataKeys: Object.keys(formData),
+      formData,
+      contextData: context.contextData,
+    });
+
     for (const condition of conditions) {
       const fieldValue = formData[condition.field];
       const conditionValue = condition.value;
       const operator = condition.operator;
 
+      console.log(`🔍 개별 조건 검증:`, {
+        field: condition.field,
+        operator,
+        expectedValue: conditionValue,
+        actualValue: fieldValue,
+        formDataHasField: condition.field in formData,
+        allFormDataKeys: Object.keys(formData),
+      });
+
       let conditionMet = false;
       switch (operator) {
         case '=':
@@ -677,6 +693,8 @@ export class ImprovedButtonActionExecutor {
 
       if (!conditionMet) {
         console.log(`❌ 조건 불만족: ${condition.field} ${operator} ${conditionValue} (실제값: ${fieldValue})`);
+        console.log(`❌ 사용 가능한 필드들:`, Object.keys(formData));
+        console.log(`❌ 전체 formData:`, formData);
         return false;
       }
     }