diff --git a/jest.setup.js b/jest.setup.js
new file mode 100644
index 0000000..50237ca
--- /dev/null
+++ b/jest.setup.js
@@ -0,0 +1,13 @@
+// Mock para resolver problema do TypeORM com node:url
+// Este arquivo é executado antes de todos os testes
+
+// Mock do módulo 'glob' do TypeORM que causa problemas
+jest.mock('glob', () => {
+  const originalModule = jest.requireActual('glob');
+  return {
+    ...originalModule,
+    glob: jest.fn(),
+    globSync: jest.fn(),
+  };
+});
+
diff --git a/package.json b/package.json
index b48d335..cd8621a 100644
--- a/package.json
+++ b/package.json
@@ -112,6 +112,10 @@
     "testEnvironment": "node",
     "moduleNameMapper": {
       "^src/(.*)$": "<rootDir>/$1"
-    }
+    },
+    "transformIgnorePatterns": [
+      "node_modules/(?!(typeorm|@nestjs)/)"
+    ],
+    "setupFilesAfterEnv": ["../jest.setup.js"]
   }
 }
diff --git a/src/auth/auth/__tests__/createToken.spec.ts b/src/auth/auth/__tests__/createToken.spec.ts
index bf45e1a..a6dd934 100644
--- a/src/auth/auth/__tests__/createToken.spec.ts
+++ b/src/auth/auth/__tests__/createToken.spec.ts
@@ -243,6 +243,72 @@ describe('AuthService - createToken', () => {
       ).rejects.toThrow('ID de vendedor inválido');
     });
 
+    it('should accept null seller ID', async () => {
+      const mockToken = 'mock.jwt.token.null.seller';
+      const userId = 1427;
+      const sellerId = null;
+      const username = 'brunelle.c';
+      const email = 'brunelle.c@jurunense.com.br';
+      const storeId = '12';
+      const sessionId = 'session-null-seller';
+
+      context.mockJwtService.sign.mockReturnValue(mockToken);
+
+      const result = await context.service.createToken(
+        userId,
+        sellerId,
+        username,
+        email,
+        storeId,
+        sessionId,
+      );
+
+      expect(context.mockJwtService.sign).toHaveBeenCalledWith(
+        {
+          id: userId,
+          sellerId: null,
+          storeId: storeId,
+          username: username,
+          email: email,
+          sessionId: sessionId,
+        },
+        { expiresIn: '8h' },
+      );
+      expect(result).toBe(mockToken);
+    });
+
+    it('should accept undefined seller ID', async () => {
+      const mockToken = 'mock.jwt.token.undefined.seller';
+      const userId = 1427;
+      const sellerId = undefined;
+      const username = 'brunelle.c';
+      const email = 'brunelle.c@jurunense.com.br';
+      const storeId = '12';
+
+      context.mockJwtService.sign.mockReturnValue(mockToken);
+
+      const result = await context.service.createToken(
+        userId,
+        sellerId as any,
+        username,
+        email,
+        storeId,
+      );
+
+      expect(context.mockJwtService.sign).toHaveBeenCalledWith(
+        {
+          id: userId,
+          sellerId: undefined,
+          storeId: storeId,
+          username: username,
+          email: email,
+          sessionId: undefined,
+        },
+        { expiresIn: '8h' },
+      );
+      expect(result).toBe(mockToken);
+    });
+
     it('should reject empty username', async () => {
       const emptyUsername = '';
 
diff --git a/src/auth/auth/__tests__/createTokenPair.spec.ts b/src/auth/auth/__tests__/createTokenPair.spec.ts
index 6c1a5e8..647d73f 100644
--- a/src/auth/auth/__tests__/createTokenPair.spec.ts
+++ b/src/auth/auth/__tests__/createTokenPair.spec.ts
@@ -321,5 +321,42 @@ describe('AuthService - createTokenPair', () => {
       expect(result).toHaveProperty('expiresIn');
       expect(Object.keys(result).length).toBe(3);
     });
+
+    it('should create token pair with null seller ID', async () => {
+      /**
+       * Cenário: Usuário sem sellerId (CODUSUR NULL no banco).
+       * Problema: Validação anterior rejeitava null sellerId.
+       * Solução esperada: Aceitar null sellerId e criar tokens normalmente.
+       */
+      const result = await context.service.createTokenPair(
+        1427,
+        null,
+        'BRUNELLE BENILDA GAMA COSTA',
+        'BRUNELLE.C@JURUNENSE.COM.BR',
+        '12',
+        'session-null-seller',
+      );
+
+      expect(result).toHaveProperty('accessToken');
+      expect(result).toHaveProperty('refreshToken');
+      expect(result).toHaveProperty('expiresIn');
+      expect(result.expiresIn).toBe(28800); // 8 horas em segundos
+
+      expect(context.mockJwtService.sign).toHaveBeenCalledWith(
+        {
+          id: 1427,
+          sellerId: null,
+          storeId: '12',
+          username: 'BRUNELLE BENILDA GAMA COSTA',
+          email: 'BRUNELLE.C@JURUNENSE.COM.BR',
+          sessionId: 'session-null-seller',
+        },
+        { expiresIn: '8h' },
+      );
+
+      expect(
+        context.mockRefreshTokenService.generateRefreshToken,
+      ).toHaveBeenCalledWith(1427, 'session-null-seller');
+    });
   });
 });
diff --git a/src/auth/auth/auth.service.ts b/src/auth/auth/auth.service.ts
index 120d31e..7b93696 100644
--- a/src/auth/auth/auth.service.ts
+++ b/src/auth/auth/auth.service.ts
@@ -28,7 +28,7 @@ export class AuthService {
    */
   async createToken(
     id: number,
-    sellerId: number,
+    sellerId: number | null,
     username: string,
     email: string,
     storeId: string,
@@ -54,7 +54,7 @@ export class AuthService {
    */
   private validateTokenParameters(
     id: number,
-    sellerId: number,
+    sellerId: number | null,
     username: string,
     email: string,
     storeId: string,
@@ -63,7 +63,11 @@ export class AuthService {
       throw new BadRequestException('ID de usuário inválido');
     }
 
-    if (sellerId === null || sellerId === undefined || sellerId < 0) {
+    if (
+      sellerId !== null &&
+      sellerId !== undefined &&
+      sellerId < 0
+    ) {
       throw new BadRequestException('ID de vendedor inválido');
     }
 
@@ -112,7 +116,7 @@ export class AuthService {
    */
   async createTokenPair(
     id: number,
-    sellerId: number,
+    sellerId: number | null,
     username: string,
     email: string,
     storeId: string,
diff --git a/src/auth/auth/dto/LoginResponseDto.ts b/src/auth/auth/dto/LoginResponseDto.ts
index ec5d69e..722aa67 100644
--- a/src/auth/auth/dto/LoginResponseDto.ts
+++ b/src/auth/auth/dto/LoginResponseDto.ts
@@ -3,7 +3,7 @@ import { ApiProperty } from '@nestjs/swagger';
 
 export class LoginResponseDto {
   @ApiProperty() id: number;
-  @ApiProperty() sellerId: number;
+  @ApiProperty({ nullable: true }) sellerId: number | null;
   @ApiProperty() name: string;
   @ApiProperty() username: string;
   @ApiProperty() storeId: string;
diff --git a/src/auth/models/jwt-payload.model.ts b/src/auth/models/jwt-payload.model.ts
index fdae7a7..b3c5a7a 100644
--- a/src/auth/models/jwt-payload.model.ts
+++ b/src/auth/models/jwt-payload.model.ts
@@ -1,11 +1,11 @@
-/* eslint-disable prettier/prettier */
-export interface JwtPayload {
-  id: number;
-  sellerId: number;
-  storeId: string;
-  username: string;
-  email: string;
-  exp?: number; // Timestamp de expiração do JWT
-  sessionId?: string; // ID da sessão atual
-}
-
+/* eslint-disable prettier/prettier */
+export interface JwtPayload {
+  id: number;
+  sellerId: number | null;
+  storeId: string;
+  username: string;
+  email: string;
+  exp?: number; // Timestamp de expiração do JWT
+  sessionId?: string; // ID da sessão atual
+}
+