diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/controller/FormalSettlementController.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/controller/FormalSettlementController.java
index d128ed17..af725976 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/controller/FormalSettlementController.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/controller/FormalSettlementController.java
@@ -232,6 +232,13 @@ public class FormalSettlementController extends BladeController {
 	@Operation(summary = "推送金蝶（应付单/应收单）")
 	public R<String> syncKingdee(@RequestParam Long id) { return R.data(formalSettlementService.syncKingdee(id)); }
 
+	@PostMapping("/invoice-assign-kingdee")
+	@ApiOperationSupport(order = 14)
+	@Operation(summary = "发票登记确认推送金蝶（先票后款：认领收票单逐单 A302-6 指定应付）")
+	public R<String> invoiceAssignKingdee(@RequestParam Long id) {
+		return R.data(formalSettlementService.pushInvoiceAssignKingdee(id));
+	}
+
 	@PostMapping("/sync-kingdee-ar-result")
 	@ApiOperationSupport(order = 15)
 	@Operation(summary = "手动勾稽金蝶应收单（A302-4 回写纠偏）")
diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/IFormalSettlementService.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/IFormalSettlementService.java
index daf1d429..54ecb4a3 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/IFormalSettlementService.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/IFormalSettlementService.java
@@ -62,6 +62,16 @@ public interface IFormalSettlementService extends BaseService<FormalSettlement>
 	 */
 	String doSyncKingdee(Long id);
 
+	/**
+	 * 发票登记确认推送金蝶（先票后款路径B：结算单审批通过后"发票登记"关联收票单 → 指定应付）。
+	 * 前置：付款结算单 + 审批通过 + 财务应付单已同步；对本单认领且收票单已推（pushed）的
+	 * 逐单调 A302-6 指定应付，单笔失败整体报因（已指定的幂等跳过，可重试）
+	 *
+	 * @param settlementId 正式结算单id
+	 * @return 推送结果描述
+	 */
+	String pushInvoiceAssignKingdee(Long settlementId);
+
 	/**
 	 * 独立事务落"生成失败"状态并记失败原因（在推送事务回滚、行锁释放后执行，与付款/收票口径统一）；
 	 * 仅更新审批通过且未同步的单据，未审批/已同步/已删除单据自动跳过，保持原状态
diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/FormalSettlementServiceImpl.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/FormalSettlementServiceImpl.java
index 0e978b4f..cf2759e9 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/FormalSettlementServiceImpl.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/FormalSettlementServiceImpl.java
@@ -1004,6 +1004,8 @@ public class FormalSettlementServiceImpl extends BaseServiceImpl<FormalSettlemen
 		String billNo;
 		String billPkId;
 		String changeDesc;
+		// 应付结算：财务应付单防重键，先票后款链路 A102-2 成功后据此对本单认领收票单逐单 A302-6 指定应付
+		String apBillSrcCode = null;
 		if ("receivable".equals(settlement.getSettlementType())) {
 			// 应收结算：财务应收单防重键（awrp_src_code）：正式结算单号_结算明细单据号下划线拼接
 			String arBillSrcCode = kingdeeArBillSyncSupport.arBillSrcCode(settlement, details);
@@ -1016,7 +1018,7 @@ public class FormalSettlementServiceImpl extends BaseServiceImpl<FormalSettlemen
 		} else {
 			// 应付结算：财务应付单防重键，付款申请「同步金蝶」（A103-1 应付下推）推送前按该键经 A102-4 预检本单应付单已生成
 			// 付款申请 A103-1 下推前的前置
-			String apBillSrcCode = kingdeeApBillSyncSupport.apBillSrcCode(settlement, details);
+			apBillSrcCode = kingdeeApBillSyncSupport.apBillSrcCode(settlement, details);
 			List<KingdeeApBillSyncSupport.BfiEntryGroup> entryGroups = kingdeeApBillSyncSupport.resolveEntryGroups(settlement, details, context);
 			KingdeeApBillSyncSupport.BfiApBillPushOutcome outcome = kingdeeApBillSyncSupport.pushApBill(
 				apBillSrcCode, settlement, entryGroups, settlement.getFormalSettlementNo(), context);
@@ -1038,11 +1040,58 @@ public class FormalSettlementServiceImpl extends BaseServiceImpl<FormalSettlemen
 			.eq(SettlementAdjustment::getApprovalStatus, TransportBusiConstant.APPROVED)
 			.set(SettlementAdjustment::getKingdeeSyncStatus, KingdeeBfiConstant.KINGDEE_STATUS_SYNCED)
 			.set(SettlementAdjustment::getKingdeeBillNo, billNo));
+		// 先票后款：应付单推送成功后，对本单认领且收票单已推金蝶（pushed）的登记逐单 A302-6 指定应付；
+		// 单笔失败不阻断结算同步，由 A801-3 回写"指定补偿"按认领关系自动重试
+		if (apBillSrcCode != null) {
+			String assignFailures = invoiceReceiptService.assignClaimedReceipts(settlement.getId(), apBillSrcCode);
+			if (Func.isNotBlank(assignFailures)) {
+				log.warn("正式结算单[{}]收票单指定应付存在失败（由 A801-3 指定补偿重试）：{}",
+					settlement.getFormalSettlementNo(), assignFailures);
+			}
+		}
 		log.info("正式结算单[{}]同步金蝶完成：settlementType={}，billNo={}，billPkId={}",
 			settlement.getFormalSettlementNo(), settlement.getSettlementType(), billNo, billPkId);
 		return billNo;
 	}
 
+	/**
+	 * 发票登记确认推送金蝶（先票后款路径B：结算单审批通过后列表"发票登记"关联收票单 → 指定应付）。
+	 * 前置：付款结算单 + 审批通过 + 财务应付单已同步（kingdeeSyncStatus=synced）；
+	 * 对本单认领且收票单已推金蝶（pushed）的登记逐单 A302-6 指定应付，单笔失败整体报因（已指定的幂等跳过，可重试）
+	 *
+	 * @param settlementId 正式结算单id
+	 * @return 推送结果描述
+	 */
+	@Override
+	public String pushInvoiceAssignKingdee(Long settlementId) {
+		FormalSettlement settlement = lockedExisting(settlementId);
+		if (!"payable".equals(settlement.getSettlementType())) {
+			throw new ServiceException("仅付款结算单允许发票登记推送金蝶");
+		}
+		if (!TransportBusiConstant.APPROVED.equals(settlement.getApprovalStatus())) {
+			throw new ServiceException("仅审批通过的付款结算单允许发票登记推送金蝶");
+		}
+		if (!KingdeeBfiConstant.KINGDEE_STATUS_SYNCED.equals(settlement.getKingdeeSyncStatus())) {
+			throw new ServiceException("请先同步金蝶财务应付单后再执行发票登记推送");
+		}
+		List<FormalSettlementDetail> details = detailMapper.selectList(Wrappers.<FormalSettlementDetail>lambdaQuery()
+			.eq(FormalSettlementDetail::getFormalSettlementId, settlementId)
+			.eq(FormalSettlementDetail::getIsDeleted, 0)
+			.orderByAsc(FormalSettlementDetail::getLineNo));
+		if (Func.isEmpty(details)) {
+			throw new ServiceException("推送失败：正式结算单无结算明细，无法组装财务应付单防重键");
+		}
+		String apBillSrcCode = kingdeeApBillSyncSupport.apBillSrcCode(settlement, details);
+		String assignFailures = invoiceReceiptService.assignClaimedReceipts(settlement.getId(), apBillSrcCode);
+		if (Func.isNotBlank(assignFailures)) {
+			log.warn("正式结算单[{}]发票登记推送金蝶存在失败：{}", settlement.getFormalSettlementNo(), assignFailures);
+			throw new ServiceException("发票登记推送金蝶完成，存在失败（已指定的幂等跳过，处理后可重试）：" + assignFailures);
+		}
+		log.info("正式结算单[{}]发票登记推送金蝶完成：认领收票单已全部指定应付，应付单防重键={}",
+			settlement.getFormalSettlementNo(), apBillSrcCode);
+		return "发票登记推送金蝶成功：认领收票单已指定应付";
+	}
+
 	@Override
 	public String syncKingdeeArResult() {
 		return kingdeeSyncLockSupport.runSingleFlight(AR_RESULT_SYNC_LOCK_PREFIX, bfiProperties.getArResult().getLockLeaseSeconds(),
@@ -1246,6 +1295,13 @@ public class FormalSettlementServiceImpl extends BaseServiceImpl<FormalSettlemen
 		settlement.setInvoiceAmount(money(settlement.getInvoiceAmount()).add(insertedMatchedTotal));
 		settlement.setInvoiceStatus(invoiceStatus(settlement.getInvoiceAmount(), settlement.getSettlementAmount()));
 		updateById(settlement);
+		// 先票后款：同步收票认领关系（一票一结算单校验 + 重建收票登记侧关系 + 刷新收票状态）；
+		// 认领为增量添加，关系须覆盖存量+本次新增的发票号
+		if ("payable".equals(settlement.getSettlementType())) {
+			Set<String> allInvoiceNos = new LinkedHashSet<>(existingNumbers);
+			allInvoiceNos.addAll(invoiceNumbers);
+			invoiceReceiptService.syncSettlementReceiptRelations(settlement.getId(), new ArrayList<>(allInvoiceNos));
+		}
 	}
 
 	private String createPayment(FormalSettlement settlement, BigDecimal appliedAmount, String remark) {
@@ -1716,6 +1772,10 @@ public class FormalSettlementServiceImpl extends BaseServiceImpl<FormalSettlemen
 		settlement.setInvoiceAmount(money(matchedTotal));
 		settlement.setInvoiceStatus(invoiceStatus(matchedTotal, settlement.getSettlementAmount()));
 		updateById(settlement);
+		// 先票后款：保存/编辑按发票行同步收票认领关系（一票一结算单校验 + 重建收票登记侧关系 + 刷新收票状态）
+		if ("payable".equals(settlement.getSettlementType())) {
+			invoiceReceiptService.syncSettlementReceiptRelations(settlement.getId(), new ArrayList<>(invoiceNumbers));
+		}
 	}
 
 	private void refreshSettlementAmount(FormalSettlement settlement) {