diff --git a/src/main/java/com/eactive/eai/custom/adapter/http/dynamic/filter/KjbHmacSha256VerifyFilter.java b/src/main/java/com/eactive/eai/custom/adapter/http/dynamic/filter/KjbHmacSha256VerifyFilter.java
index 8cee22b..2ef0367 100644
--- a/src/main/java/com/eactive/eai/custom/adapter/http/dynamic/filter/KjbHmacSha256VerifyFilter.java
+++ b/src/main/java/com/eactive/eai/custom/adapter/http/dynamic/filter/KjbHmacSha256VerifyFilter.java
@@ -40,8 +40,12 @@ public class KjbHmacSha256VerifyFilter implements HttpAdapterFilter, HttpAdapter
 			String xObpPartnercode = request.getHeader("x-obp-partnercode");
 			String xObpSignatureUrl = request.getHeader("x-obp-signature-url");
 			String xObpSignatureBody = request.getHeader("x-obp-signature-body");
-			if (StringUtils.isBlank(xObpPartnercode) || StringUtils.isBlank(xObpSignatureUrl) || StringUtils.isBlank(xObpSignatureBody)) {
-				throw new JwtAuthException(String.format("%d%s%s", HttpStatus.UNAUTHORIZED.value(), SERVICE_CODE_UNKNOWN, "00"), "Can not find mandatory Http Header");
+			if (StringUtils.isBlank(xObpPartnercode) 
+					|| StringUtils.isBlank(xObpSignatureUrl) 
+					|| StringUtils.isBlank(xObpSignatureBody)) {
+				throw new JwtAuthException(
+						String.valueOf(HttpStatus.UNAUTHORIZED.value()), 
+						"Can not find mandatory Http Header");
 			}
 			
 			if (StringUtils.isNotBlank(prop.getProperty(INBOUND_QUERY_STRING))) {
@@ -57,13 +61,13 @@ public class KjbHmacSha256VerifyFilter implements HttpAdapterFilter, HttpAdapter
 
 			if (!StringUtils.equals(xObpSignatureUrl, macUrl)) {
 				throw new JwtAuthException(
-						String.format("%d%s%s", HttpStatus.UNAUTHORIZED.value(), SERVICE_CODE_UNKNOWN, "00"),
+						String.valueOf(HttpStatus.UNAUTHORIZED.value()),
 						"Signature verifying failed : x-obp-signature-url");
 			}
 
 			if (!StringUtils.equals(xObpSignatureBody, macBody)) {
 				throw new JwtAuthException(
-						String.format("%d%s%s", HttpStatus.UNAUTHORIZED.value(), SERVICE_CODE_UNKNOWN, "00"),
+						String.valueOf(HttpStatus.UNAUTHORIZED.value()),
 						"Signature verifying failed : x-obp-signature-body");
 			}
 
@@ -73,7 +77,7 @@ public class KjbHmacSha256VerifyFilter implements HttpAdapterFilter, HttpAdapter
 		} catch (Exception e) {
 			logger.error(e.getMessage());
 			throw new JwtAuthException(
-					String.format("%d%s%s", HttpStatus.UNAUTHORIZED.value(), SERVICE_CODE_UNKNOWN, "00"),
+					String.valueOf(HttpStatus.UNAUTHORIZED.value()),
 					"Signature verifying failed(unkown)");
 		}
 
@@ -92,14 +96,14 @@ public class KjbHmacSha256VerifyFilter implements HttpAdapterFilter, HttpAdapter
 		String clientId = assignClientId(prop, request);
 		if (StringUtils.isBlank(clientId)) {
 			throw new JwtAuthException(
-					String.format("%d%s%s", HttpStatus.UNAUTHORIZED.value(), SERVICE_CODE_UNKNOWN, "00"),
+					String.valueOf(HttpStatus.UNAUTHORIZED.value()),
 					"Can not find clientId info");
 		}
 
 		ClientVO client = (ClientVO) OAuth2Manager.getInstance().getClientDeatilsStore().get(clientId);
 		if (client == null) {
 			throw new JwtAuthException(
-					String.format("%d%s%s", HttpStatus.UNAUTHORIZED.value(), SERVICE_CODE_UNKNOWN, "00"),
+					String.valueOf(HttpStatus.UNAUTHORIZED.value()),
 					"Can not find client info");
 		}