diff --git a/src/main/java/icurriculum/domain/curriculum/data/Core.java b/src/main/java/icurriculum/domain/curriculum/data/Core.java
index 3e48e9e..0ff9091 100644
--- a/src/main/java/icurriculum/domain/curriculum/data/Core.java
+++ b/src/main/java/icurriculum/domain/curriculum/data/Core.java
@@ -103,6 +103,12 @@ public void validate() {
         if (isAreaFixed == null || requiredCredit == null) {
             throw new GeneralException(ErrorStatus.CURRICULUM_MISSING_VALUE, this);
         }
+        if (!isAreaFixed && !requiredAreaSet.isEmpty()) {
+            throw new GeneralException(ErrorStatus.CORE_INVALID_DATA, this);
+        }
+        if (isAreaFixed && requiredAreaSet.isEmpty()) {
+            throw new GeneralException(ErrorStatus.CORE_INVALID_DATA, this);
+        }
     }
 
     private void validateCategory(Category category) {
diff --git a/src/main/java/icurriculum/domain/graduation/service/module/processor/core/strategy/CommonCoreStrategy.java b/src/main/java/icurriculum/domain/graduation/service/module/processor/core/strategy/CommonCoreStrategy.java
index 002ae5d..dd03ef4 100644
--- a/src/main/java/icurriculum/domain/graduation/service/module/processor/core/strategy/CommonCoreStrategy.java
+++ b/src/main/java/icurriculum/domain/graduation/service/module/processor/core/strategy/CommonCoreStrategy.java
@@ -63,7 +63,8 @@ private Set<Course> handleAreaAlternative(
         while (iterator.hasNext()) {
             Take take = iterator.next();
 
-            for (Category area : core.getRequiredAreaSet()) {
+            Set<Category> requiredAreaSet = getRequiredAreaSetWhenHandleAreaAlt(core);
+            for (Category area : requiredAreaSet) {
                 Set<String> areaAlternativeCodeSet = core.getAreaAlternativeCodeSet(area);
 
                 if (GraduationUtils.isApproved(take, areaAlternativeCodeSet)) {
@@ -85,6 +86,13 @@ private Set<Course> handleAreaAlternative(
         return areaAltCourseSet;
     }
 
+    private Set<Category> getRequiredAreaSetWhenHandleAreaAlt(Core core) {
+        if (!core.getIsAreaFixed()) {
+            return GraduationUtils.CORE_CATEGORYSET;
+        }
+        return core.getRequiredAreaSet();
+    }
+
     /*
      * [core logic]
      * - 영역 대체를 통해서 이미 계산된 과목은 건너뛴다.
diff --git a/src/main/java/icurriculum/global/response/exception/GeneralException.java b/src/main/java/icurriculum/global/response/exception/GeneralException.java
index 023f5b6..d0719a0 100644
--- a/src/main/java/icurriculum/global/response/exception/GeneralException.java
+++ b/src/main/java/icurriculum/global/response/exception/GeneralException.java
@@ -21,4 +21,15 @@ public GeneralException(ErrorStatus errorStatus, Object data) {
         this.data = data;
     }
 
-}
\ No newline at end of file
+    public GeneralException(ErrorStatus errorStatus, Throwable cause) {
+        super(errorStatus.getMessage(), cause);
+        this.errorStatus = errorStatus;
+        this.data = null;
+    }
+
+    public GeneralException(ErrorStatus errorStatus, Object data, Throwable cause) {
+        super(errorStatus.getMessage(), cause);
+        this.errorStatus = errorStatus;
+        this.data = data;
+    }
+}
diff --git a/src/main/java/icurriculum/global/response/exception/handler/GlobalExceptionHandler.java b/src/main/java/icurriculum/global/response/exception/handler/GlobalExceptionHandler.java
index ea7e4cd..1f3f5b9 100644
--- a/src/main/java/icurriculum/global/response/exception/handler/GlobalExceptionHandler.java
+++ b/src/main/java/icurriculum/global/response/exception/handler/GlobalExceptionHandler.java
@@ -11,15 +11,14 @@
 @RestControllerAdvice
 public class GlobalExceptionHandler {
 
-    /*
-     * 비즈니스적으로 에러가 발생했을 때 사용됩니다.
-     */
     @ExceptionHandler(GeneralException.class)
     public ResponseEntity<ApiResponse<Object>> handleGeneralException(GeneralException ex) {
         log.error("Error Code: {}, Message: {}, Data: {}",
             ex.getErrorStatus().getCode(),
             ex.getErrorStatus().getMessage(),
-            ex.getData() != null ? ex.getData() : "No additional data");
+            ex.getData() != null ? ex.getData() : "No additional data",
+            ex
+        );
 
         return ResponseEntity
             .status(ex.getErrorStatus().getHttpStatus())
diff --git a/src/main/java/icurriculum/global/response/status/ErrorStatus.java b/src/main/java/icurriculum/global/response/status/ErrorStatus.java
index 01023c5..f9a09a8 100644
--- a/src/main/java/icurriculum/global/response/status/ErrorStatus.java
+++ b/src/main/java/icurriculum/global/response/status/ErrorStatus.java
@@ -37,10 +37,12 @@ public enum ErrorStatus {
     CURRICULUM_NOT_VALID_CATEGORY(HttpStatus.BAD_REQUEST, "CURRICULUM402",
         "CurriculumCode 에는 전공필수, 전공선택, 교양필수 조회가능합니다."),
     CORE_NOT_VALID_CATEGORY(HttpStatus.BAD_REQUEST, "CURRICULUM403",
-        "Core 에는 핵심교양만 조회가능합니다."),
-    CURRICULUM_MISSING_VALUE(HttpStatus.BAD_REQUEST, "CURRICULUM404",
+        "Core는 핵심교양만 조회가능합니다."),
+    CORE_INVALID_DATA(HttpStatus.BAD_REQUEST, "CURRICULUM404",
+        "Core의 데이터형식이 올바르지 않습니다."),
+    CURRICULUM_MISSING_VALUE(HttpStatus.BAD_REQUEST, "CURRICULUM405",
         "Curriculum 내부의 필수값이 빠졌습니다."),
-    CURRICULUM_DECIDER_MISSING_VALUE(HttpStatus.BAD_REQUEST, "CURRICULUM405",
+    CURRICULUM_DECIDER_MISSING_VALUE(HttpStatus.BAD_REQUEST, "CURRICULUM406",
         "CurriculumDecider 내부의 필수값이 빠졌습니다."),
 
     /*