diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/entity/data/Slot.java b/liteflow-core/src/main/java/com/yomahub/liteflow/entity/data/Slot.java
index e971d34aa..751acc9eb 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/entity/data/Slot.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/entity/data/Slot.java
@@ -47,4 +47,12 @@ public interface Slot {
 	public void setChainName(String chainName);
 
 	public String getChainName();
+
+	public boolean isSuccess();
+
+	public void setSuccess(boolean success);
+
+	public String getErrorMsg();
+
+	public void setErrorMsg(String errorMsg);
 }