diff --git a/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/dto/InvoiceReceiptSaveRequest.java b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/dto/InvoiceReceiptSaveRequest.java
index f7b4c29b..52cd3376 100644
--- a/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/dto/InvoiceReceiptSaveRequest.java
+++ b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/dto/InvoiceReceiptSaveRequest.java
@@ -58,6 +58,14 @@ public class InvoiceReceiptSaveRequest implements Serializable {
 	private String departmentEmails;
 	private String attachmentsJson;
 	private String remark;
+	/**
+	 * 结算组织（页面手选部门，先票后款链路收票登记不再必选关联结算单）
+	 */
+	private Long deptId;
+	private String deptName;
+	/**
+	 * 关联结算单分摊（兼容历史入参：先票后款链路不再传，关联关系由付款结算单侧写入）
+	 */
 	private List<SettlementRow> settlements;
 
 	/**
diff --git a/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/InvoiceReceipt.java b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/InvoiceReceipt.java
index 91a33972..f3d58532 100644
--- a/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/InvoiceReceipt.java
+++ b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/InvoiceReceipt.java
@@ -112,6 +112,10 @@ public class InvoiceReceipt extends TenantEntity {
 	 * 收款方
 	 */
 	private String payeeName;
+	/**
+	 * 往来户金蝶供应商代码（发票销售方，保存时经客商档案/A901-1 回填，推送 A303-2 前强校验）
+	 */
+	private String supplierCode;
 	/**
 	 * 开票单位开户银行
 	 */
diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/support/KingdeeApBillSyncSupport.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/support/KingdeeApBillSyncSupport.java
index 4b1e9c93..653180b7 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/support/KingdeeApBillSyncSupport.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/support/KingdeeApBillSyncSupport.java
@@ -968,6 +968,25 @@ public class KingdeeApBillSyncSupport {
 		return this.kingdeeOrgNumber(contract.getProjectId(), context);
 	}
 
+	/**
+	 * 金蝶组织编码：指定部门沿部门树向上反查唯一平台公司（是否平台公司=是），取该平台公司的金蝶组织编码。
+	 * 先票后款链路收票登记不挂合同/项目，结算组织由页面手选部门派生（A303-2 org_number）
+	 *
+	 * @param deptId  手选部门id（收票登记 deptId）
+	 * @param context 金蝶同步上下文（缓存载体）
+	 * @return 组织编码
+	 */
+	public String kingdeeOrgNumberByDept(Long deptId, KingdeeSyncContext context) {
+		if (deptId == null) {
+			throw new ServiceException("推送金蝶失败，收票登记未选择结算组织，无法确定金蝶组织编码");
+		}
+		Dept dept = SysCache.getDept(deptId);
+		if (dept == null) {
+			throw new ServiceException("推送金蝶失败，所选结算组织[" + deptId + "]不存在，无法确定金蝶组织编码");
+		}
+		return this.platformCompanyOrgNumber(dept, dept.getDeptName());
+	}
+
 	/**
 	 * 金蝶组织编码：项目业务部门沿部门树向上反查唯一平台公司（是否平台公司=是），取该平台公司的金蝶组织编码；
 	 * 项目未关联/未维护业务部门/业务部门未归属平台公司/平台公司未维护金蝶组织编码时拦截
@@ -978,8 +997,15 @@ public class KingdeeApBillSyncSupport {
 	 */
 	public String kingdeeOrgNumber(Long projectId, KingdeeSyncContext context) {
 		ProjectApply project = this.requireOrgProject(projectId, context);
-		// 沿部门树向上反查平台公司，上限 20 级防脏数据成环死循环
 		Dept dept = SysCache.getDept(project.getBusinessDeptId());
+		if (dept == null) {
+			throw new ServiceException("推送金蝶失败，项目[" + Func.toStr(project.getProjectName()) + "]业务部门不存在，无法确定金蝶组织编码");
+		}
+		return this.platformCompanyOrgNumber(dept, project.getBusinessDeptName());
+	}
+
+	/** 部门树向上反查平台公司金蝶组织编码（上限 20 级防脏数据成环死循环），未归属平台公司时拦截 */
+	private String platformCompanyOrgNumber(Dept dept, String startDeptName) {
 		for (int depth = 0; dept != null && depth < 20; depth++) {
 			if (Objects.equals(dept.getIsPlatformCompany(), 1)) {
 				if (Func.isBlank(dept.getKingdeeDeptCode())) {
@@ -989,7 +1015,7 @@ public class KingdeeApBillSyncSupport {
 			}
 			dept = dept.getParentId() == null ? null : SysCache.getDept(dept.getParentId());
 		}
-		throw new ServiceException("推送金蝶失败，项目业务部门[" + Func.toStr(project.getBusinessDeptName()) + "]未归属平台公司，无法确定金蝶组织编码");
+		throw new ServiceException("推送金蝶失败，部门[" + Func.toStr(startDeptName) + "]未归属平台公司，无法确定金蝶组织编码");
 	}
 
 	/**
diff --git a/doc/sql/transport/lqj/temp/06_blade_invoice_receipt_supplier_code_menu_20261031.sql b/doc/sql/transport/lqj/temp/06_blade_invoice_receipt_supplier_code_menu_20261031.sql
new file mode 100644
index 00000000..a8279540
--- /dev/null
+++ b/doc/sql/transport/lqj/temp/06_blade_invoice_receipt_supplier_code_menu_20261031.sql
@@ -0,0 +1,44 @@
+-- 先票后款改造（收票登记A303-2 + 付款结算单A102-2 + A302-6指定应付）
+-- ① blade_invoice_receipt 新增 supplier_code：往来户=发票销售方在金蝶的供应商代码（A901-1），保存时尽力回填、推送前强校验
+-- ② 付款结算单（payment_settlement）下新增「发票登记」按钮权限：结算单审批后发票登记关联收票单并推送指定应付
+-- 幂等可重复执行：列查 information_schema，菜单 NOT EXISTS 防重
+
+-- ① 收票登记表新增 supplier_code 列
+SET @ddl = (
+  SELECT IF(
+    (SELECT COUNT(*) FROM information_schema.COLUMNS
+     WHERE TABLE_SCHEMA = DATABASE()
+       AND TABLE_NAME = 'blade_invoice_receipt'
+       AND COLUMN_NAME = 'supplier_code') = 0,
+    'ALTER TABLE `blade_invoice_receipt` ADD COLUMN `supplier_code` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT ''往来户金蝶供应商代码（发票销售方，A901-1，保存时尽力回填、推送前强校验）'' AFTER `payee_name`',
+    'SELECT 1'));
+PREPARE stmt FROM @ddl;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+-- ② 付款结算单「发票登记」按钮权限（先票后款路径B：列表发票登记 → 关联收票单 → 推送 A302-6 指定应付）
+INSERT INTO `blade_menu`
+(`id`,`parent_id`,`code`,`name`,`alias`,`path`,`source`,`sort`,`category`,`action`,`is_open`,`component`,`remark`,`is_deleted`)
+SELECT
+  2090000000000002300,
+  p.id,
+  'payment_settlement_invoice_register',
+  '发票登记',
+  'payment_settlement_invoice_register',
+  '',
+  '',
+  2,
+  2,
+  0,
+  1,
+  NULL,
+  '先票后款：结算单审批后发票登记关联收票单并推送金蝶指定应付',
+  0
+FROM `blade_menu` p
+WHERE p.`code` = 'payment_settlement'
+  AND p.`is_deleted` = 0
+  AND NOT EXISTS (
+    SELECT 1 FROM `blade_menu` x
+    WHERE x.`code` = 'payment_settlement_invoice_register' AND x.`is_deleted` = 0
+  )
+LIMIT 1;