diff --git a/axhub-tool-other/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/SampleStringToolService.java b/axhub-tool-other/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/SampleStringToolService.java
index 45dd2f9..de1bb64 100644
--- a/axhub-tool-other/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/SampleStringToolService.java
+++ b/axhub-tool-other/src/main/java/io/shinhanlife/axhub/biz/mcp/tool/service/SampleStringToolService.java
@@ -39,7 +39,7 @@ public class SampleStringToolService extends AbstractMcpToolService {
         // 1. EIMS(Legacy)를 통해 원본 고정 길이 문자열을 받아옵니다.
         Map<String, Object> result = executeLegacy("MCI_STRING", "TRGM_001", req);
         
-        if ("ERROR".equals(result.get("status"))) {
+        if (!"SUCCESS".equals(result.get("status"))) {
             return result;
         }