diff --git a/fems-api/src/services/auth.service.js b/fems-api/src/services/auth.service.js
index 73cd7e6..abc1393 100644
--- a/fems-api/src/services/auth.service.js
+++ b/fems-api/src/services/auth.service.js
@@ -81,113 +81,136 @@ class AuthService {
   }
 
   async edgeLogin(username, password, businessNumber, ipAddress, userAgent) {
-    // 1. 먼저 회사 검증
-    const company = await Company.findOne({
-      where: {
+    try {
+      // businessNumber를 숫자로 변환
+      const numericBusinessNumber = parseInt(
+        businessNumber.replace(/[-,]/g, ""),
+        10
+      );
+
+      logger.debug("Converted business number:", {
+        original: businessNumber,
+        numeric: numericBusinessNumber,
+      });
+
+      // 1. 먼저 회사 검증
+      const company = await Company.findOne({
+        where: {
+          businessNumber,
+          isActive: true,
+        },
+      });
+
+      if (!company) {
+        logger.error(`Company not found: ${businessNumber}`);
+        throw new Error("Invalid business number or company not found");
+      }
+
+      // 2. 사용자 검증
+      const userWithPassword = await User.findOne({
+        where: {
+          username,
+          companyId: company.id,
+          isActive: true,
+        },
+        attributes: ["id", "password", "isActive"],
+      });
+
+      if (!userWithPassword) {
+        await this._logAuthAttempt(
+          null,
+          "edge_failed_login",
+          ipAddress,
+          userAgent,
+          businessNumber
+        );
+        throw new Error("Invalid credentials");
+      }
+
+      // 3. 비밀번호 검증
+      const isValidPassword = await userWithPassword.validatePassword(password);
+      if (!isValidPassword) {
+        await this._logAuthAttempt(
+          userWithPassword.id,
+          "edge_failed_login",
+          ipAddress,
+          userAgent,
+          businessNumber
+        );
+        throw new Error("Invalid credentials");
+      }
+
+      // 4. 사용자 정보 조회 (상세 정보)
+      const user = await User.findOne({
+        where: { id: userWithPassword.id },
+        include: [
+          {
+            model: Company,
+            attributes: ["id", "name", "businessNumber", "contractEndDate"],
+            where: { isActive: true }, // 활성화된 회사만
+          },
+          {
+            model: Branch,
+            attributes: ["id", "name"],
+          },
+          {
+            model: Role,
+            through: { attributes: [] },
+            attributes: ["id", "name", "permissions"],
+            required: false,
+          },
+        ],
+        attributes: {
+          exclude: ["password"],
+        },
+      });
+
+      // 5. 마지막 로그인 시간 업데이트
+      await User.update(
+        { lastLoginAt: new Date() },
+        { where: { id: user.id } }
+      );
+
+      // 6. 로그인 기록
+      await this._logAuthAttempt(
+        user.id,
+        "edge_login",
+        ipAddress,
+        userAgent,
+        businessNumber
+      );
+
+      // 7. 권한 정보 처리
+      const permissions = this._processPermissions(user.Roles || []);
+
+      // 8. 응답 데이터 구성
+      const userData = user.toJSON();
+      const companyData = userData.Company || {};
+      delete userData.Roles;
+
+      const userInfo = {
+        ...userData,
+        companyName: companyData.name,
+        businessNumber: companyData.businessNumber,
+        contractEndDate: companyData.contractEndDate,
+        permissions,
+        isEdgeLogin: true, // Edge 로그인 여부 표시
+      };
+
+      const token = this._generateToken(userInfo);
+
+      return {
+        token,
+        user: userInfo,
+      };
+    } catch (error) {
+      logger.error("Edge login error:", {
+        error: error.message,
         businessNumber,
-        isActive: true,
-      },
-    });
-
-    if (!company) {
-      logger.error(`Company not found: ${businessNumber}`);
-      throw new Error("Invalid business number or company not found");
-    }
-
-    // 2. 사용자 검증
-    const userWithPassword = await User.findOne({
-      where: {
         username,
-        companyId: company.id,
-        isActive: true,
-      },
-      attributes: ["id", "password", "isActive"],
-    });
-
-    if (!userWithPassword) {
-      await this._logAuthAttempt(
-        null,
-        "edge_failed_login",
-        ipAddress,
-        userAgent,
-        businessNumber
-      );
-      throw new Error("Invalid credentials");
+      });
+      throw error;
     }
-
-    // 3. 비밀번호 검증
-    const isValidPassword = await userWithPassword.validatePassword(password);
-    if (!isValidPassword) {
-      await this._logAuthAttempt(
-        userWithPassword.id,
-        "edge_failed_login",
-        ipAddress,
-        userAgent,
-        businessNumber
-      );
-      throw new Error("Invalid credentials");
-    }
-
-    // 4. 사용자 정보 조회 (상세 정보)
-    const user = await User.findOne({
-      where: { id: userWithPassword.id },
-      include: [
-        {
-          model: Company,
-          attributes: ["id", "name", "businessNumber", "contractEndDate"],
-          where: { isActive: true }, // 활성화된 회사만
-        },
-        {
-          model: Branch,
-          attributes: ["id", "name"],
-        },
-        {
-          model: Role,
-          through: { attributes: [] },
-          attributes: ["id", "name", "permissions"],
-          required: false,
-        },
-      ],
-      attributes: {
-        exclude: ["password"],
-      },
-    });
-
-    // 5. 마지막 로그인 시간 업데이트
-    await User.update({ lastLoginAt: new Date() }, { where: { id: user.id } });
-
-    // 6. 로그인 기록
-    await this._logAuthAttempt(
-      user.id,
-      "edge_login",
-      ipAddress,
-      userAgent,
-      businessNumber
-    );
-
-    // 7. 권한 정보 처리
-    const permissions = this._processPermissions(user.Roles || []);
-
-    // 8. 응답 데이터 구성
-    const userData = user.toJSON();
-    const companyData = userData.Company || {};
-    delete userData.Roles;
-
-    const userInfo = {
-      ...userData,
-      companyName: companyData.name,
-      businessNumber: companyData.businessNumber,
-      contractEndDate: companyData.contractEndDate,
-      permissions,
-      isEdgeLogin: true, // Edge 로그인 여부 표시
-    };
-
-    const token = this._generateToken(userInfo);
-
-    return {
-      token,
-      user: userInfo,
-    };
   }
 
   _processPermissions(roles) {
diff --git a/fems-api/src/utils/createInitialAdmin.js b/fems-api/src/utils/createInitialAdmin.js
index 53391eb..4fa40e6 100644
--- a/fems-api/src/utils/createInitialAdmin.js
+++ b/fems-api/src/utils/createInitialAdmin.js
@@ -9,41 +9,58 @@ const {
 const { createInitialData } = require("./initialSetup/dataSetup");
 const { logCreatedAccounts } = require("./initialSetup/loggingSetup");
 
+// 상수로 정의하여 일관성 유지
+const ADMIN_COMPANY = {
+  BUSINESS_NUMBER: 4397802852, // 올바른 번호로 수정
+  NAME: "FEMS 관리자",
+  ADDRESS: "서울시 강남구",
+  TEL: "02-0000-0000",
+  EMAIL: "admin@fems.com",
+  REPRESENTATIVE: "관리자",
+};
+
 async function createInitialAdmin() {
   try {
-    // 1. 관리자 회사 생성 또는 조회
+    // 사업자번호로 회사 조회
     let adminCompany = await Company.findOne({
-      where: { businessNumber: 4398702852 },
+      where: { businessNumber: ADMIN_COMPANY.BUSINESS_NUMBER },
     });
 
     let adminBranch; // Branch 변수 선언
-    const businessNumber = parseInt("439-78-02852".replace(/-/g, ""), 10);
-
     if (!adminCompany) {
+      // 회사 생성
       adminCompany = await Company.create({
-        name: "FEMS 관리자",
-        businessNumber,
-        address: "서울시 강남구",
-        tel: "02-0000-0000",
-        email: "admin@fems.com",
-        representative: "관리자",
+        name: ADMIN_COMPANY.NAME,
+        businessNumber: ADMIN_COMPANY.BUSINESS_NUMBER, // 상수 사용
+        address: ADMIN_COMPANY.ADDRESS,
+        tel: ADMIN_COMPANY.TEL,
+        email: ADMIN_COMPANY.EMAIL,
+        representative: ADMIN_COMPANY.REPRESENTATIVE,
         isActive: true,
         contractStartDate: new Date(),
         contractEndDate: new Date(
           new Date().setFullYear(new Date().getFullYear() + 10)
         ),
       });
-      logger.info("Admin company created successfully");
+
+      logger.info("Admin company created successfully", {
+        companyId: adminCompany.id,
+        businessNumber: ADMIN_COMPANY.BUSINESS_NUMBER,
+      });
 
       // 본사 지점 생성
       adminBranch = await Branch.create({
         name: "본사",
-        address: "서울시 강남구",
-        tel: "02-0000-0000",
+        address: ADMIN_COMPANY.ADDRESS,
+        tel: ADMIN_COMPANY.TEL,
         isActive: true,
         companyId: adminCompany.id,
       });
-      logger.info("Admin company headquarters branch created successfully");
+
+      logger.info("Admin branch created successfully", {
+        branchId: adminBranch.id,
+        companyId: adminCompany.id,
+      });
     } else {
       // 기존 회사의 지점 조회
       adminBranch = await Branch.findOne({