diff --git a/.forge/BAIS-POLICY-1783705261-attempt-3.md b/.forge/BAIS-POLICY-1783705261-attempt-2.md
similarity index 60%
rename from .forge/BAIS-POLICY-1783705261-attempt-3.md
rename to .forge/BAIS-POLICY-1783705261-attempt-2.md
index 9f2d8e5..a0f3663 100644
--- a/.forge/BAIS-POLICY-1783705261-attempt-3.md
+++ b/.forge/BAIS-POLICY-1783705261-attempt-2.md
@@ -1,3 +1,3 @@
-# BAIS-POLICY-1783705261-attempt-3
+# BAIS-POLICY-1783705261-attempt-2
 
-Forge 이슈 작업 브랜치 `forge/BAIS-POLICY-1783705261-attempt-3`.
+Forge 이슈 작업 브랜치 `forge/BAIS-POLICY-1783705261-attempt-2`.
diff --git a/pom.xml b/pom.xml
deleted file mode 100644
index 1d4db07..0000000
--- a/pom.xml
+++ /dev/null
@@ -1,39 +0,0 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-    <groupId>com.example.baispolicy</groupId>
-    <artifactId>bais-policy</artifactId>
-    <version>1.0-SNAPSHOT</version>
-    <packaging>jar</packaging>
-
-    <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.5.14</version>
-        <relativePath/> <!-- lookup parent from repository -->
-    </parent>
-
-    <properties>
-        <java.version>17</java.version>
-    </properties>
-
-    <dependencies>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-            </plugin>
-        </plugins>
-    </build>
-</project>
diff --git a/src/main/java/com/example/baispolicy/PaymentService.java b/src/main/java/com/example/baispolicy/PaymentService.java
index 420d154..55047c9 100644
--- a/src/main/java/com/example/baispolicy/PaymentService.java
+++ b/src/main/java/com/example/baispolicy/PaymentService.java
@@ -3,8 +3,8 @@ package com.example.baispolicy;
 public class PaymentService {
     public String approve(String transactionId) {
         if (transactionId == null || transactionId.isBlank()) {
-            throw new IllegalArgumentException("Transaction ID must not be blank.");
+            throw new IllegalArgumentException("transactionId cannot be blank");
         }
         return "APPROVED:" + transactionId;
     }
-}
+}
\ No newline at end of file
diff --git a/src/test/java/com/example/baispolicy/PaymentServiceTest.java b/src/test/java/com/example/baispolicy/PaymentServiceTest.java
deleted file mode 100644
index e29ee02..0000000
--- a/src/test/java/com/example/baispolicy/PaymentServiceTest.java
+++ /dev/null
@@ -1,25 +0,0 @@
-package com.example.baispolicy;
-
-import org.junit.jupiter.api.Test;
-import static org.junit.jupiter.api.Assertions.*;
-
-class PaymentServiceTest {
-    private final PaymentService paymentService = new PaymentService();
-
-    @Test
-    void testApprove_WithValidTransactionId_ShouldReturnApprovedMessage() {
-        String transactionId = "12345";
-        String result = paymentService.approve(transactionId);
-        assertEquals("APPROVED:12345", result);
-    }
-
-    @Test
-    void testApprove_WithBlankTransactionId_ShouldThrowException() {
-        assertThrows(IllegalArgumentException.class, () -> {
-            paymentService.approve("");
-        });
-        assertThrows(IllegalArgumentException.class, () -> {
-            paymentService.approve(null);
-        });
-    }
-}