diff --git a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/controller/CallbackController.java b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/controller/CallbackController.java
index dad37640..845bbba9 100644
--- a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/controller/CallbackController.java
+++ b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/controller/CallbackController.java
@@ -22,6 +22,7 @@ import lombok.AccessLevel;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.math.NumberUtils;
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.transaction.support.TransactionTemplate;
@@ -122,7 +123,7 @@ class CallbackController implements EssCallbackApi, InitializingBean {
                     })
                     .collect(toList());
             EssContract contract = essContractDao.find(changes.getFlowId()).orElse(null);
-            if (contract == null)
+            if (contract == null && NumberUtils.isDigits(changes.getCustomerData()))
                 contract = essContractDao.getById(Long.parseLong(changes.getCustomerData()));
             if (contract != null)
                 contractManager.updateContractState(contract, state, details);