diff --git a/src/main/java/com/eactive/eai/custom/message/InterfaceMapperDJB.java b/src/main/java/com/eactive/eai/custom/message/InterfaceMapperDJB.java
index 82bc95d..941a742 100644
--- a/src/main/java/com/eactive/eai/custom/message/InterfaceMapperDJB.java
+++ b/src/main/java/com/eactive/eai/custom/message/InterfaceMapperDJB.java
@@ -2,6 +2,7 @@ package com.eactive.eai.custom.message;
 
 import org.apache.commons.lang3.StringUtils;
 
+import com.eactive.eai.common.property.PropManager;
 import com.eactive.eai.common.server.EAIServerManager;
 import com.eactive.eai.message.StandardMessage;
 import com.eactive.eai.message.service.DefaultInterfaceMapper;
@@ -28,17 +29,24 @@ public class InterfaceMapperDJB extends DefaultInterfaceMapper {
     // 처리결과구분코드 DJBank 값
     private static final String PROCS_RSLT_SUCCESS = "S";
     private static final String PROCS_RSLT_FAIL    = "F";
+    
+	private static String API_ID_PREFIX = StringUtils
+			.defaultString(PropManager.getInstance().getProperty("API_ID_PREFIX"));
 
     @Override
     public String getEaiSvcCode(StandardMessage standardMessage) {
-        String interfaceId    = getInterfaceId(standardMessage);
+    	if(StringUtils.isNotBlank(standardMessage.getEaiSvcCd()))
+    		return standardMessage.getEaiSvcCd();
+    	
+//        String interfaceId    = getInterfaceId(standardMessage);
+    	String txId = getServiceId(standardMessage);
         String sendRecvDvcd   = getSendRecvDivision(standardMessage); // S | R
         String inExDivision   = getInExDivision(standardMessage);     // 1 | 2
+        
+        if(StringUtils.isEmpty(txId))
+        	throw new RuntimeException("not found txid");
 
-        if (interfaceId == null) interfaceId = "";
-        interfaceId = interfaceId.trim();
-
-        return interfaceId + sendRecvDvcd + StringUtils.defaultString(inExDivision);
+        return API_ID_PREFIX + txId + sendRecvDvcd + StringUtils.defaultString(inExDivision);
     }
 
     // ----------------------------------------------------------------