diff --git a/src/main/java/com/yem/wm/im/debcrednotenew/validator/DebCredNewUnAuditValidator.java b/src/main/java/com/yem/wm/im/debcrednotenew/validator/DebCredNewUnAuditValidator.java
new file mode 100644
index 00000000..72dec668
--- /dev/null
+++ b/src/main/java/com/yem/wm/im/debcrednotenew/validator/DebCredNewUnAuditValidator.java
@@ -0,0 +1,45 @@
+package com.yem.wm.im.debcrednotenew.validator;
+
+import kd.bos.dataentity.entity.DynamicObject;
+import kd.bos.entity.ExtendedDataEntity;
+import kd.bos.entity.validate.AbstractValidator;
+import kd.bos.orm.query.QCP;
+import kd.bos.orm.query.QFilter;
+import kd.bos.servicehelper.BusinessDataServiceHelper;
+
+import java.math.BigDecimal;
+
+/**
+ * @author ljw
+ * @date 2024/12/23 17:43
+ * @description DebCredNewUnAuditValidator
+ */
+public class DebCredNewUnAuditValidator extends AbstractValidator {
+
+    @Override
+    public void validate() {
+        ExtendedDataEntity[] dataEntities = this.getDataEntities();
+        for (ExtendedDataEntity dataEntitie : dataEntities) {
+            DynamicObject dataEntity = dataEntitie.getDataEntity();
+            String billno = dataEntity.getString("billno");
+            if (billno.length() > 4) {
+                BigDecimal bigDecimal = BigDecimal.ZERO;
+                String modifiedString = billno.substring(0, billno.length() - 4);
+                String substringed = billno.substring(billno.length() - 4);
+                DynamicObject[] loaded = BusinessDataServiceHelper.load("yem_debcrednote", "id,billno", new QFilter[]{new QFilter("billno", QCP.in, modifiedString + "%")});
+                for (DynamicObject dynamicObject : loaded) {
+                    String dynamicObjectString = dynamicObject.getString("billno");
+                    String substring = dynamicObjectString.substring(dynamicObjectString.length() - 4);
+                    BigDecimal decimal = BigDecimal.valueOf(Double.parseDouble(substring));
+                    if (decimal.compareTo(bigDecimal) > 0) {
+                        bigDecimal = decimal;
+                    }
+                }
+                BigDecimal decimal = BigDecimal.valueOf(Double.parseDouble(substringed));
+                if (bigDecimal.compareTo(BigDecimal.ZERO) != 0 && decimal.compareTo(bigDecimal) != 0) {
+                    this.addMessage(dataEntitie, "当前单不是最大单号，请从最大单号开始删除！！！");
+                }
+            }
+        }
+    }
+}