diff --git a/crm-lead/src/main/java/com/crm/lead/domain/param/ConvertOpportunityParam.java b/crm-lead/src/main/java/com/crm/lead/domain/param/ConvertOpportunityParam.java
index a4a00e2..ee175d9 100644
--- a/crm-lead/src/main/java/com/crm/lead/domain/param/ConvertOpportunityParam.java
+++ b/crm-lead/src/main/java/com/crm/lead/domain/param/ConvertOpportunityParam.java
@@ -21,9 +21,12 @@ public class ConvertOpportunityParam {
     @Schema(description = "甲方（自由文本，可空）")
     private String partyA;
 
-    @Schema(description = "意向客户（自由文本，必填）")
+    @Schema(description = "意向客户（自由文本，必填；票 11 降为名快照，与 customerId 并存）")
     private String intendedCustomer;
 
+    @Schema(description = "意向客户 id（票 11；下拉选客户得到，引用 A4 客户模块。A4 下拉未就绪前可空）")
+    private Long customerId;
+
     @Schema(description = "地区国标 code（必填）")
     private String regionCode;
 
diff --git a/crm-lead/src/main/java/com/crm/lead/port/outbound/CreateOpportunityCmd.java b/crm-lead/src/main/java/com/crm/lead/port/outbound/CreateOpportunityCmd.java
index 28183c3..6a75470 100644
--- a/crm-lead/src/main/java/com/crm/lead/port/outbound/CreateOpportunityCmd.java
+++ b/crm-lead/src/main/java/com/crm/lead/port/outbound/CreateOpportunityCmd.java
@@ -8,7 +8,10 @@ package com.crm.lead.port.outbound;
  * @param opportunityName    商机名称（必填）
  * @param industryCode       行业字典 code（opportunity.industry，必填）
  * @param partyA             甲方（自由文本，可空）
- * @param intendedCustomer   意向客户（自由文本，必填）
+ * @param intendedCustomer   意向客户名快照（自由文本；票 11 降为客户名快照，与 customerId 并存）
+ * @param customerId         意向客户 id（票 11；下拉选客户得到，引用 A4 客户模块）。
+ *                           <b>暂可空</b>：A4 客户下拉未就绪前前端传 null，商机侧跳过建关联子表；
+ *                           A4 就绪后收紧为必填（票 11 终态契约）。
  * @param regionCode         地区国标 code（varchar 12，必填）
  * @param remark             备注（自由文本，可空）
  * @param sourceLeadName     线索名称快照
@@ -24,6 +27,7 @@ public record CreateOpportunityCmd(
         String industryCode,
         String partyA,
         String intendedCustomer,
+        Long customerId,
         String regionCode,
         String remark,
         String sourceLeadName,
diff --git a/crm-lead/src/main/java/com/crm/lead/service/impl/LeadServiceImpl.java b/crm-lead/src/main/java/com/crm/lead/service/impl/LeadServiceImpl.java
index 0e8b854..35044f9 100644
--- a/crm-lead/src/main/java/com/crm/lead/service/impl/LeadServiceImpl.java
+++ b/crm-lead/src/main/java/com/crm/lead/service/impl/LeadServiceImpl.java
@@ -361,7 +361,8 @@ public class LeadServiceImpl extends BaseServiceImpl<LeadMapper, Lead>
         try {
             opportunityId = port.createOpportunity(new CreateOpportunityCmd(
                     lead.getId(), param.getOpportunityName(), param.getIndustryCode(),
-                    param.getPartyA(), param.getIntendedCustomer(), param.getRegionCode(),
+                    param.getPartyA(), param.getIntendedCustomer(), param.getCustomerId(),
+                    param.getRegionCode(),
                     param.getRemark(), lead.getLeadName(), lead.getPhone(),
                     lead.getProductCode(), lead.getOwnerUserId(),
                     lead.getOwnerDeptIdSnapshot(), lead.getPoolId()));