diff --git a/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/KingdeeReceiptFlow.java b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/KingdeeReceiptFlow.java
index 94ad3281..36db378e 100644
--- a/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/KingdeeReceiptFlow.java
+++ b/blade-service-api/blade-transport-api/src/main/java/org/springblade/transport/pojo/entity/KingdeeReceiptFlow.java
@@ -71,7 +71,7 @@ public class KingdeeReceiptFlow extends TenantEntity {
 	/**
 	 * 未匹配收款金额（A301-1 unmatchamountrec，认领上限口径）
 	 */
-	private BigDecimal unclaimedAmount;
+	private BigDecimal unmatchAmountRec;
 	/**
 	 * 已匹配收款金额（A301-1 matchamountrec）
 	 */
diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ReceiptClaimRecordServiceImpl.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ReceiptClaimRecordServiceImpl.java
index 15d509ff..60b7cfb2 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ReceiptClaimRecordServiceImpl.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ReceiptClaimRecordServiceImpl.java
@@ -301,7 +301,7 @@ public class ReceiptClaimRecordServiceImpl extends BaseServiceImpl<ReceiptClaimM
 	 * 可认领上限：未匹配收款金额（A301-1 unmatchamountrec）与收款金额取较小正值（与收款流水侧口径一致）
 	 */
 	private BigDecimal claimCeiling(KingdeeReceiptFlow flow) {
-		BigDecimal unclaimed = money(flow.getUnclaimedAmount());
+		BigDecimal unclaimed = money(flow.getUnmatchAmountRec());
 		BigDecimal receipt = money(flow.getReceiptAmount());
 		if (receipt.compareTo(BigDecimal.ZERO) <= 0) {
 			return unclaimed;
diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ReceiptFlowServiceImpl.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ReceiptFlowServiceImpl.java
index 0adb723d..9ba21d92 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ReceiptFlowServiceImpl.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ReceiptFlowServiceImpl.java
@@ -42,6 +42,7 @@ import org.springblade.thirdparty.bfi.pojo.dto.BfiRecBillQueryDTO;
 import org.springblade.thirdparty.bfi.pojo.vo.BfiPageVO;
 import org.springblade.thirdparty.bfi.pojo.vo.BfiRecBillVO;
 import org.springblade.thirdparty.bfi.service.IBfiService;
+import org.springblade.thirdparty.bfi.util.BfiUtil;
 import org.springblade.transport.config.BfiProperties;
 import org.springblade.transport.constant.KingdeeBfiConstant;
 import org.springblade.transport.mapper.FormalSettlementMapper;
@@ -69,7 +70,6 @@ import org.springframework.transaction.support.TransactionTemplate;
 
 import java.math.BigDecimal;
 import java.math.RoundingMode;
-import java.time.Duration;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
@@ -113,7 +113,8 @@ public class ReceiptFlowServiceImpl extends BaseServiceImpl<KingdeeReceiptFlowMa
 	 */
 	private static final int SYNC_BATCH_SIZE = 5000;
 	/**
-	 * A301-1 翻页最大页数保护，防金蝶侧 lastPage 异常死循环（200条/页 × 500页）
+	 * A301-1 单片翻页最大页数保护（200条/页 × 500页）：触顶说明该时间片数据超过单查询窗口上限，
+	 * 由 BfiUtil 二分切片续扫保证尾部不漏
 	 */
 	private static final int SYNC_MAX_PAGES = 500;
 	/**
@@ -344,7 +345,7 @@ public class ReceiptFlowServiceImpl extends BaseServiceImpl<KingdeeReceiptFlowMa
 		}
 
 		// 认领上限：未匹配收款金额（A301-1 unmatchamountrec）与收款金额取较小值（避免未匹配金额异常偏大导致无法认领完成）
-		if (flow.getUnclaimedAmount() == null) {
+		if (flow.getUnmatchAmountRec() == null) {
 			throw new ServiceException("未匹配收款金额缺失，请先手动同步金蝶收款流水");
 		}
 		BigDecimal claimCeiling = claimCeiling(flow);
@@ -461,7 +462,7 @@ public class ReceiptFlowServiceImpl extends BaseServiceImpl<KingdeeReceiptFlowMa
 		long start = System.currentTimeMillis();
 		// 同步口径：按业务日期窗口拉取金蝶收款单（收款处理），按流水分录展开，
 		// 以金蝶明细流水号为幂等键 upsert 收款流水表；本地已认领金额/状态（claimedAmount/claimStatus）
-		// 由认领、作废驱动，不被同步顺带覆盖，未匹配收款金额单独存 unclaimed_amount 作为认领上限。
+		// 由认领、作废驱动，不被同步顺带覆盖，未匹配收款金额单独存 unmatch_amount_rec 作为认领上限。
 		BfiRecBillQueryDTO queryDTO = new BfiRecBillQueryDTO();
 		queryDTO.setBeginBizdate(beginBizdate);
 		queryDTO.setEndBizdate(endBizdate);
@@ -759,7 +760,7 @@ public class ReceiptFlowServiceImpl extends BaseServiceImpl<KingdeeReceiptFlowMa
 	 * 主口径为金蝶侧未匹配收款金额；与收款金额取 min，避免未匹配金额异常偏大导致无法进入「认领完成」。
 	 */
 	private BigDecimal claimCeiling(KingdeeReceiptFlow flow) {
-		BigDecimal unclaimed = money(flow.getUnclaimedAmount());
+		BigDecimal unclaimed = money(flow.getUnmatchAmountRec());
 		BigDecimal receipt = money(flow.getReceiptAmount());
 		if (receipt.compareTo(BigDecimal.ZERO) <= 0) {
 			return unclaimed;
@@ -806,7 +807,7 @@ public class ReceiptFlowServiceImpl extends BaseServiceImpl<KingdeeReceiptFlowMa
 
 	/**
 	 * A301-1 收款单 → 收款流水表字段拷贝（仅覆盖金蝶侧来源字段，不覆盖本地认领金额与状态）。
-	 * 认领上限口径：未匹配收款金额 unmatchamountrec 存 unclaimed_amount。
+	 * 认领上限口径：未匹配收款金额 unmatchamountrec 存 unmatch_amount_rec。
 	 */
 	private void copyRecBillRow(KingdeeReceiptFlow target, BfiRecBillRow row) {
 		BfiRecBillVO source = row.recBill();
@@ -838,7 +839,7 @@ public class ReceiptFlowServiceImpl extends BaseServiceImpl<KingdeeReceiptFlowMa
 		// 明细流水号
 		target.setDetailSerialNo(row.detailSerialNo());
 		// 未匹配收款金额（认领上限口径）
-		target.setUnclaimedAmount(money(source.getUnmatchamountrec()));
+		target.setUnmatchAmountRec(money(source.getUnmatchamountrec()));
 		// 已匹配收款金额 / 已匹配付款金额 / 未匹配付款金额
 		target.setMatchAmountRec(money(source.getMatchamountrec()));
 		target.setMatchAmountPay(money(source.getMatchamountpay()));
diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/wrapper/ReceiptFlowWrapper.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/wrapper/ReceiptFlowWrapper.java
index e0e59387..99f6020a 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/wrapper/ReceiptFlowWrapper.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/wrapper/ReceiptFlowWrapper.java
@@ -70,12 +70,12 @@ public class ReceiptFlowWrapper extends BaseEntityWrapper<KingdeeReceiptFlow, Re
 			case "failed" -> "处理失败";
 			default -> "未推送";
 		});
-		// 剩余可认领金额 = 可认领上限 − 累计认领金额（上限取公告未认领与收款金额较小值）
-		BigDecimal unclaimedAmount = money(entity.getUnclaimedAmount());
+		// 剩余可认领金额 = 可认领上限 − 累计认领金额（上限取未匹配收款金额与收款金额较小值）
+		BigDecimal unmatchAmountRec = money(entity.getUnmatchAmountRec());
 		BigDecimal receiptAmount = money(entity.getReceiptAmount());
-		BigDecimal claimCeiling = unclaimedAmount;
-		if (receiptAmount.compareTo(BigDecimal.ZERO) > 0 && unclaimedAmount.compareTo(BigDecimal.ZERO) > 0) {
-			claimCeiling = unclaimedAmount.min(receiptAmount);
+		BigDecimal claimCeiling = unmatchAmountRec;
+		if (receiptAmount.compareTo(BigDecimal.ZERO) > 0 && unmatchAmountRec.compareTo(BigDecimal.ZERO) > 0) {
+			claimCeiling = unmatchAmountRec.min(receiptAmount);
 		}
 		BigDecimal claimedAmount = money(entity.getClaimedAmount());
 		vo.setRemainingAmount(claimCeiling.subtract(claimedAmount).max(BigDecimal.ZERO));
diff --git a/doc/docs/业务流程/2026-10-29-收款流水菜单改造（数据源A301-2改A301-1-认领只登记本地并推送合规C107-1与C107-3作废同步）.md b/doc/docs/业务流程/2026-10-29-收款流水菜单改造（数据源A301-2改A301-1-认领只登记本地并推送合规C107-1与C107-3作废同步）.md
index 954e0da2..6898382a 100644
--- a/doc/docs/业务流程/2026-10-29-收款流水菜单改造（数据源A301-2改A301-1-认领只登记本地并推送合规C107-1与C107-3作废同步）.md
+++ b/doc/docs/业务流程/2026-10-29-收款流水菜单改造（数据源A301-2改A301-1-认领只登记本地并推送合规C107-1与C107-3作废同步）.md
@@ -75,7 +75,7 @@ A301-1 收款单查询（业务日期窗口取 `thirdParty.bfi.recBillSync.days`
 | kingdee_bill_status | `billstatus` 映射 | A/B已提交→pushed、C已审核→approved、D已收款→received、其余（含G退单）→failed |
 | detail_serial_no | 主单 `billno` | 明细流水号=收款单号，**幂等键**；主单粒度，一张收款单一条流水，不展开流水分录 |
 | receipt_amount | 主单 `actrecamt` | 收款金额（金蝶收款金额口径） |
-| unclaimed_amount | `unmatchamountrec` | 未匹配收款金额（认领上限口径） |
+| unmatch_amount_rec | `unmatchamountrec` | 未匹配收款金额（认领上限口径；原列名 unclaimed_amount 已改名） |
 | match_amount_rec | `matchamountrec` | 已匹配收款金额 |
 | match_amount_pay | `matchamountpay` | 已匹配付款金额 |
 | unmatch_amount_pay | `unmatchamountpay` | 未匹配付款金额 |
diff --git a/doc/sql/transport/lqj/20261029/03_blade_kingdee_receipt_flow_unmatch_amount_rec_rename_20261029.sql b/doc/sql/transport/lqj/20261029/03_blade_kingdee_receipt_flow_unmatch_amount_rec_rename_20261029.sql
new file mode 100644
index 00000000..23ba1916
--- /dev/null
+++ b/doc/sql/transport/lqj/20261029/03_blade_kingdee_receipt_flow_unmatch_amount_rec_rename_20261029.sql
@@ -0,0 +1,15 @@
+-- 收款流水表未匹配收款金额列改名：unclaimed_amount（A301-2 公告未认领金额遗留列名）
+--   → unmatch_amount_rec（与 A301-1 字段口径及其他匹配金额列命名统一）
+
+SET @ddl_sql = (
+  SELECT IF(COUNT(*) = 1,
+    'ALTER TABLE `blade_kingdee_receipt_flow` RENAME COLUMN `unclaimed_amount` TO `unmatch_amount_rec`',
+    'SELECT 1')
+  FROM information_schema.COLUMNS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'blade_kingdee_receipt_flow'
+    AND COLUMN_NAME = 'unclaimed_amount'
+);
+PREPARE ddl_stmt FROM @ddl_sql;
+EXECUTE ddl_stmt;
+DEALLOCATE PREPARE ddl_stmt;