diff --git a/.forge/BAIS-CTX-1783821073-attempt-4.md b/.forge/BAIS-CTX-1783821073-attempt-2.md
similarity index 63%
rename from .forge/BAIS-CTX-1783821073-attempt-4.md
rename to .forge/BAIS-CTX-1783821073-attempt-2.md
index 27c880c..7477b95 100644
--- a/.forge/BAIS-CTX-1783821073-attempt-4.md
+++ b/.forge/BAIS-CTX-1783821073-attempt-2.md
@@ -1,3 +1,3 @@
-# BAIS-CTX-1783821073-attempt-4
+# BAIS-CTX-1783821073-attempt-2
 
-Forge 이슈 작업 브랜치 `forge/BAIS-CTX-1783821073-attempt-4`.
+Forge 이슈 작업 브랜치 `forge/BAIS-CTX-1783821073-attempt-2`.
diff --git a/pom.xml b/pom.xml
index d025c7b..61c60dd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,22 +1,16 @@
-<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">
+<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>
+  <parent>
+    <groupId>org.springframework.boot</groupId>
+    <artifactId>spring-boot-starter-parent</artifactId>
+    <version>3.5.14</version>
+  </parent>
+  <groupId>com.klaro.bais</groupId>
+  <artifactId>bais-platform</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>pom</packaging>
 
-    <modelVersion>4.0.0</modelVersion>
-
-    <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.5.14</version>
-    </parent>
-
-    <groupId>com.klaro.bais</groupId>
-    <artifactId>bais-platform</artifactId>
-    <version>1.0-SNAPSHOT</version>
-    <packaging>pom</packaging>
-
-    <modules>
-        <module>services/payments</module>
-    </modules>
-
-</project>
\ No newline at end of file
+  <modules>
+    <module>services/payments</module>
+  </modules>
+</project>
diff --git a/services/payments/pom.xml b/services/payments/pom.xml
deleted file mode 100644
index f4d20af..0000000
--- a/services/payments/pom.xml
+++ /dev/null
@@ -1,29 +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>
-
-    <parent>
-        <groupId>com.klaro.bais</groupId>
-        <artifactId>bais-platform</artifactId>
-        <version>1.0-SNAPSHOT</version>
-        <relativePath>../../pom.xml</relativePath>
-    </parent>
-
-    <artifactId>payments</artifactId>
-    <dependencies>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>3.18.0</version>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <version>3.5.14</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-
-</project>
\ No newline at end of file
diff --git a/services/payments/src/main/java/com/klaro/bais/payments/PaymentReferenceService.java b/services/payments/src/main/java/com/klaro/bais/payments/PaymentReferenceService.java
deleted file mode 100644
index a349b69..0000000
--- a/services/payments/src/main/java/com/klaro/bais/payments/PaymentReferenceService.java
+++ /dev/null
@@ -1,9 +0,0 @@
-package com.klaro.bais.payments;
-
-import org.apache.commons.lang3.StringUtils;
-
-public class PaymentReferenceService {
-    public String normalize(String input) {
-        return StringUtils.trimToEmpty(input);
-    }
-}
\ No newline at end of file
diff --git a/services/payments/src/test/java/com/klaro/bais/payments/PaymentReferenceServiceTest.java b/services/payments/src/test/java/com/klaro/bais/payments/PaymentReferenceServiceTest.java
deleted file mode 100644
index b363d79..0000000
--- a/services/payments/src/test/java/com/klaro/bais/payments/PaymentReferenceServiceTest.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package com.klaro.bais.payments;
-
-import org.junit.jupiter.api.Test;
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-class PaymentReferenceServiceTest {
-
-    private final PaymentReferenceService service = new PaymentReferenceService();
-
-    @Test
-    void testNormalizeNull() {
-        assertEquals("", service.normalize(null));
-    }
-
-    @Test
-    void testNormalizeEmpty() {
-        assertEquals("", service.normalize("  "));
-    }
-
-    @Test
-    void testNormalizeNormalString() {
-        assertEquals("test", service.normalize("  test  "));
-    }
-}
\ No newline at end of file