diff --git a/server/crm/src/main/java/com/pudonghot/ambition/crm/service/support/CustomerServiceSupport.java b/server/crm/src/main/java/com/pudonghot/ambition/crm/service/support/CustomerServiceSupport.java
index 782719e..a040fd1 100644
--- a/server/crm/src/main/java/com/pudonghot/ambition/crm/service/support/CustomerServiceSupport.java
+++ b/server/crm/src/main/java/com/pudonghot/ambition/crm/service/support/CustomerServiceSupport.java
@@ -192,8 +192,11 @@ public class CustomerServiceSupport
                 @Override
                 public void read(final CSVRecord record) {
                     final String customerId = record.get(0).trim();
+                    if (StringUtils.isBlank(customerId)) {
+                        log.info("Blank customer id found, ignore.");
+                        return;
+                    }
                     customer.setId(customerId);
-
                     customer.setName(record.get(1).trim());
                     customer.setCountryCode(record.get(2).trim());
                     customer.setState(record.get(3).trim());
diff --git a/server/crm/src/main/java/com/pudonghot/ambition/crm/service/support/CustomerYearToDateSaleServiceSupport.java b/server/crm/src/main/java/com/pudonghot/ambition/crm/service/support/CustomerYearToDateSaleServiceSupport.java
index d06419e..6eb2d66 100644
--- a/server/crm/src/main/java/com/pudonghot/ambition/crm/service/support/CustomerYearToDateSaleServiceSupport.java
+++ b/server/crm/src/main/java/com/pudonghot/ambition/crm/service/support/CustomerYearToDateSaleServiceSupport.java
@@ -90,6 +90,10 @@ public class CustomerYearToDateSaleServiceSupport
                 @Override
                 public void read(final CSVRecord record) {
                     final String customerId = StringUtils.trim(record.get(0));
+                    if (StringUtils.isBlank(customerId)) {
+                        log.info("Blank customer id found, ignore.");
+                        return;
+                    }
                     customerYtdSale.setCustomerId(customerId);
                     customerYtdSale.setYear(StringUtils.trim(record.get(3)));
                     customerYtdSale.setYtdSale(Long.parseLong(StringUtils.trim(record.get(6)).replace(",", "")));