diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/PaymentApplicationServiceImpl.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/PaymentApplicationServiceImpl.java
index 8f81a0f0..4f9672f3 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/PaymentApplicationServiceImpl.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/PaymentApplicationServiceImpl.java
@@ -134,6 +134,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
+import java.util.function.Function;
 import java.util.function.Consumer;
 import java.util.stream.Collectors;
 
@@ -903,9 +904,9 @@ public class PaymentApplicationServiceImpl extends BaseServiceImpl<PaymentApplic
 	 *    手动指定付款单据号（paymentNos）时仅回写指定单据；生成失败单据一并纳入：
 	 *    金蝶侧已生成说明上次推送实际成功（如下推超时但远端已落单、本地事务回滚），
 	 *    查得即回填纠正为已生成，避免人工重推产生重复单据，未查得则保持生成失败等待人工重推；
-	 * ② A103-2 付款申请单查询回填：指定单据号时按金蝶单据号（billno）精确查询（无金蝶单据号兜底按来源单号），
-	 *    定时全量回写按 paymentNo（awrp_src_code）分批查询，同一来源单号取最近修改一条，
-	 *    回填金蝶单号/内码/同步状态/已付金额并联动预结算与正式结算付款记录；未查得保持现状等待下一轮；
+	 * ② A103-2 付款申请单查询回填：统一按金蝶单据号（billno，全局唯一）分批精确查询，
+	 *    同一金蝶单据号取最近修改一条，按金蝶单据号与本地 kingdee_bill_no 匹配回填
+	 *    金蝶单号/内码/同步状态/已付金额并联动预结算与正式结算付款记录；未查得保持现状等待下一轮；
 	 * ③ A103-4 付款处理查询补付款记录：付款中/已付款单据 + 已付款无付款记录单据（补偿），
 	 *    按付款组织 + awrp_sourcebillno（金蝶单据号）数组精确查询，双键勾稽后回填付款记录；
 	 * ④ 汇总执行摘要：各计数随流程累计，单笔失败仅计数不中断整轮
@@ -931,22 +932,18 @@ public class PaymentApplicationServiceImpl extends BaseServiceImpl<PaymentApplic
 		int updated = 0;
 		int failed = 0;
 		int paidCount = 0;
-		Map<String, BfiPayApplyVO> payApplyMap = new HashMap<>();
+		// A103-2 查询结果按金蝶单据号（billno，全局唯一）归并缓存，本地 kingdee_bill_no 与之同源匹配
+		Map<String, BfiPayApplyVO> payApplyByBillNo = new HashMap<>();
 		if (!applications.isEmpty()) {
-			// ② A103-2 付款申请单查询：指定单据号时按金蝶单据号（billno）精确查询，无金蝶单据号的兜底按来源单号查询；
-			// 定时全量回写按 paymentNo（awrp_src_code）分批查询，同一来源单号取最近修改的一条
+			// ② A103-2 付款申请单查询：统一按金蝶单据号（billno）分批精确查询，同一金蝶单据号取最近修改的一条；
+			// 来源单号 awrp_src_code 因历史版本逻辑与 Nacos 配置变更含环境后缀（如 xxx-local），不作为回写查询与匹配依据
 			List<String> billNos = applications.stream()
 				.map(PaymentApplication::getKingdeeBillNo).filter(Func::isNotEmpty).distinct().toList();
-			List<String> fallbackSrcCodes = applications.stream()
-				.filter(application -> Func.isEmpty(application.getKingdeeBillNo()))
-				.map(PaymentApplication::getPaymentNo).filter(Func::isNotEmpty).distinct().toList();
 			this.batchForeach(billNos, PAY_RESULT_QUERY_BATCH,
-				batch -> payApplyMap.putAll(this.latestPayApplyBySrcCode(this.queryPayApplyPagesByBillNo(batch))));
-			this.batchForeach(fallbackSrcCodes, PAY_RESULT_QUERY_BATCH,
-				batch -> payApplyMap.putAll(this.latestPayApplyBySrcCode(this.queryPayApplyPages(batch))));
+				batch -> payApplyByBillNo.putAll(this.latestPayApplyByKey(this.queryPayApplyPagesByBillNo(batch), BfiPayApplyVO::getBillno)));
 			// 逐单回写：未查得保持现状等待下一轮，查得即回填（解锁仅由金蝶删单回调触发）
 			for (PaymentApplication application : applications) {
-				BfiPayApplyVO payApply = payApplyMap.get(application.getPaymentNo());
+				BfiPayApplyVO payApply = payApplyByBillNo.get(application.getKingdeeBillNo());
 				if (payApply == null) {
 					continue;
 				}
@@ -967,7 +964,7 @@ public class PaymentApplicationServiceImpl extends BaseServiceImpl<PaymentApplic
 		// 候选二：已付款终态但尚无真实付款记录的单据（上轮付款记录回填失败的补偿）
 		Map<Long, PaymentApplication> recordCandidates = new LinkedHashMap<>();
 		for (PaymentApplication application : applications) {
-			BfiPayApplyVO payApply = payApplyMap.get(application.getPaymentNo());
+			BfiPayApplyVO payApply = payApplyByBillNo.get(application.getKingdeeBillNo());
 			if (payApply != null && !KingdeeBfiConstant.BFI_PAY_STATUS_UNPAID.equals(payApply.getPaystatus())) {
 				recordCandidates.put(application.getId(), application);
 			}
@@ -984,7 +981,7 @@ public class PaymentApplicationServiceImpl extends BaseServiceImpl<PaymentApplic
 			// 兜底按合同关联项目解析（已付款补偿候选不在本轮 A103-2 返回内，须走兜底）
 			Map<String, List<PaymentApplication>> orgGroups = new LinkedHashMap<>();
 			for (PaymentApplication application : recordCandidates.values()) {
-				BfiPayApplyVO payApply = payApplyMap.get(application.getPaymentNo());
+				BfiPayApplyVO payApply = payApplyByBillNo.get(application.getKingdeeBillNo());
 				String orgNumber = payApply == null ? null : payApply.getPayorgNumber();
 				if (Func.isBlank(orgNumber)) {
 					try {
@@ -1174,28 +1171,30 @@ public class PaymentApplicationServiceImpl extends BaseServiceImpl<PaymentApplic
 	 * @return 最近修改的付款申请单，未查询到返回 null
 	 */
 	/**
-	 * A103-2 查询结果按来源单号归并：同一 awrp_src_code 取最近修改（modifytime 最大）的一条，
-	 * 定时回写与恢复勾稽共用同一取数规则
+	 * A103-2 查询结果按指定键归并：同一键取最近修改（modifytime 最大）的一条，
+	 * 定时回写（按金蝶单据号 billno）与推送幂等预检（按来源单号 awrp_src_code）共用同一取数规则
 	 *
 	 * @param payApplies A103-2 分页查询全量结果
-	 * @return 来源单号 -> 最近修改的付款申请单
+	 * @param keyGetter  归并键提取函数
+	 * @return 归并键 -> 最近修改的付款申请单
 	 */
-	private Map<String, BfiPayApplyVO> latestPayApplyBySrcCode(List<BfiPayApplyVO> payApplies) {
-		Map<String, BfiPayApplyVO> latestBySrcCode = new HashMap<>();
+	private Map<String, BfiPayApplyVO> latestPayApplyByKey(List<BfiPayApplyVO> payApplies, Function<BfiPayApplyVO, String> keyGetter) {
+		Map<String, BfiPayApplyVO> latestByKey = new HashMap<>();
 		for (BfiPayApplyVO payApply : payApplies) {
-			if (Func.isEmpty(payApply.getAwrpSrcCode())) {
+			String key = keyGetter.apply(payApply);
+			if (Func.isEmpty(key)) {
 				continue;
 			}
-			BfiPayApplyVO existing = latestBySrcCode.get(payApply.getAwrpSrcCode());
+			BfiPayApplyVO existing = latestByKey.get(key);
 			if (existing == null || this.strCompare(payApply.getModifytime(), existing.getModifytime()) > 0) {
-				latestBySrcCode.put(payApply.getAwrpSrcCode(), payApply);
+				latestByKey.put(key, payApply);
 			}
 		}
-		return latestBySrcCode;
+		return latestByKey;
 	}
 
 	private BfiPayApplyVO queryLatestPayApply(String paymentNo) {
-		return this.latestPayApplyBySrcCode(this.queryPayApplyPages(List.of(paymentNo))).get(paymentNo);
+		return this.latestPayApplyByKey(this.queryPayApplyPages(List.of(paymentNo)), BfiPayApplyVO::getAwrpSrcCode).get(paymentNo);
 	}
 
 	/**