diff --git a/@rbv b/@rbv
index 0c1491976..10a89baaf 160000
--- a/@rbv
+++ b/@rbv
@@ -1 +1 @@
-Subproject commit 0c1491976582ee7898cd8b16d768414d979ed479
+Subproject commit 10a89baaf882b2244f8c2218404a2e0dff5d3e66
diff --git a/src/main/java/com/rebuild/core/service/trigger/impl/FieldWriteback.java b/src/main/java/com/rebuild/core/service/trigger/impl/FieldWriteback.java
index 7693bd49a..cc564f1f3 100644
--- a/src/main/java/com/rebuild/core/service/trigger/impl/FieldWriteback.java
+++ b/src/main/java/com/rebuild/core/service/trigger/impl/FieldWriteback.java
@@ -14,6 +14,7 @@ import cn.devezhao.persist4j.Field;
 import cn.devezhao.persist4j.Record;
 import cn.devezhao.persist4j.dialect.FieldType;
 import cn.devezhao.persist4j.engine.ID;
+import cn.devezhao.persist4j.engine.NullValue;
 import cn.devezhao.persist4j.engine.StandardRecord;
 import cn.devezhao.persist4j.metadata.MissingMetaExcetion;
 import cn.devezhao.persist4j.record.RecordVisitor;
@@ -56,7 +57,12 @@ import java.util.*;
 @Slf4j
 public class FieldWriteback extends FieldAggregation {
 
-    public static final String WB_ONE2ONE = "one2one";
+    /**
+     * 设：线索1、客户N（即 1 <:> N）
+     * 当线索作为目标，客户作为源时，更新客户时只会更新 1 个线索（one2one）
+     * 当客户作为目标，线索作为源时，更新线索时会更新 N 个客户
+     */
+    public static final String ONE2ONE_MODE = "one2one";
 
     private static final String DATE_EXPR = "#";
     private static final String CODE_PREFIX = "{{{{";  // ends with }}}}
@@ -140,7 +146,7 @@ public class FieldWriteback extends FieldAggregation {
         sourceEntity = actionContext.getSourceEntity();
         targetEntity = MetadataHelper.getEntity(targetFieldEntity[1]);
 
-        boolean isOne2One = ((JSONObject) actionContext.getActionContent()).getBooleanValue(WB_ONE2ONE);
+        boolean isOne2One = ((JSONObject) actionContext.getActionContent()).getBooleanValue(ONE2ONE_MODE);
 
         targetRecordIds = new HashSet<>();
 
@@ -149,12 +155,20 @@ public class FieldWriteback extends FieldAggregation {
             targetRecordIds.add(actionContext.getSourceRecord());
 
         } else if (isOne2One) {
-            // 只会存在一个记录
+            // 只会存在一个记录的
             Record afterRecord = operatingContext.getAfterRecord();
-            ID referenceId = afterRecord == null ? null : afterRecord.getID(targetFieldEntity[0]);
-            if (referenceId == null) return;
+            if (afterRecord == null) return;
 
-            targetRecordIds.add(referenceId);
+            ID referenceId;
+            if (afterRecord.hasValue(targetFieldEntity[0])) {
+                referenceId = afterRecord.getID(targetFieldEntity[0]);
+                if (NullValue.is(referenceId)) referenceId = null;
+            } else {
+                Object[] o = Application.getQueryFactory().uniqueNoFilter(afterRecord.getPrimary(), targetFieldEntity[0]);
+                referenceId = (ID) o[0];
+            }
+
+            if (referenceId != null) targetRecordIds.add(referenceId);
 
         } else {
             String sql = String.format("select %s from %s where %s = ?",
diff --git a/src/main/java/com/rebuild/web/robot/trigger/FieldWritebackController.java b/src/main/java/com/rebuild/web/robot/trigger/FieldWritebackController.java
index cc29e111e..a9fde4aae 100644
--- a/src/main/java/com/rebuild/web/robot/trigger/FieldWritebackController.java
+++ b/src/main/java/com/rebuild/web/robot/trigger/FieldWritebackController.java
@@ -61,7 +61,6 @@ public class FieldWritebackController extends BaseController {
         }
 
         // 我引用了谁 v2.7.1
-        // 通常用于一对一，如果业务上存在多对一可能冲突（会以最后触发的记录为准）
 
         for (Field refFrom : MetadataSorter.sortFields(sourceEntity, DisplayType.REFERENCE)) {
             if (MetadataHelper.isCommonsField(refFrom)) {
@@ -75,7 +74,7 @@ public class FieldWritebackController extends BaseController {
 
             String entityLabel = String.format("%s (%s.%s)",
                     EasyMetaFactory.getLabel(refEntity), EasyMetaFactory.getLabel(sourceEntity), EasyMetaFactory.getLabel(refFrom));
-            entities.add(new String[] { refEntity.getName(), entityLabel, refFrom.getName(), FieldWriteback.WB_ONE2ONE});
+            entities.add(new String[] { refEntity.getName(), entityLabel, refFrom.getName(), FieldWriteback.ONE2ONE_MODE});
         }
 
         FieldAggregationController.sortEntities(entities, sourceEntity);
diff --git a/src/main/resources/i18n/lang.zh_CN.json b/src/main/resources/i18n/lang.zh_CN.json
index ef31846e1..09f8bd47d 100644
--- a/src/main/resources/i18n/lang.zh_CN.json
+++ b/src/main/resources/i18n/lang.zh_CN.json
@@ -2209,5 +2209,6 @@
 	"确认解锁？":"确认解锁？",
 	"解锁":"解锁",
 	"列表模板":"列表模板",
-	"未启用":"未启用"
+	"未启用":"未启用",
+	"请至少添加 1 个更新规则":"请至少添加 1 个更新规则"
 }
diff --git a/src/main/resources/web/assets/js/trigger/trigger.FIELDWRITEBACK.js b/src/main/resources/web/assets/js/trigger/trigger.FIELDWRITEBACK.js
index 1069ba5e3..d4f3e9221 100644
--- a/src/main/resources/web/assets/js/trigger/trigger.FIELDWRITEBACK.js
+++ b/src/main/resources/web/assets/js/trigger/trigger.FIELDWRITEBACK.js
@@ -307,7 +307,7 @@ class ContentFieldWriteback extends ActionContentSpec {
       return false
     }
     if (content.items.length === 0) {
-      RbHighbar.create($L('请至少添加 1 个聚合规则'))
+      RbHighbar.create($L('请至少添加 1 个更新规则'))
       return false
     }