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 c63ac3eb..8789361f 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
@@ -1223,8 +1223,8 @@ public class PaymentApplicationServiceImpl extends BaseServiceImpl<PaymentApplic
 		param.setAwrpSrcSys(bfiProperties.getSrcSys());
 		// 结算组织.编码
 		param.setSettleorgNumber(orgNumber);
-		// 部门.编码
-		param.setAwrpDepartmentNumber(orgNumber);
+		// 部门.编码：项目业务部门自身的金蝶编码（结算/申请/付款组织仍传上溯平台公司编码）
+		param.setAwrpDepartmentNumber(kingdeeApBillSyncSupport.kingdeeDeptNumber(contract.getProjectId(), context));
 		// 【必填】单据类型.编码
 		param.setBilltypeNumber(bfiProperties.getPayApply().getBilltype());
 		// 【必填】申请日期：yyyy-MM-dd HH:mm:ss（各接口统一格式）
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 38225ca5..f2d12f48 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
@@ -974,16 +974,7 @@ public class KingdeeApBillSyncSupport {
 	 * @return 组织编码
 	 */
 	public String kingdeeOrgNumber(Long projectId, KingdeeSyncContext context) {
-		if (projectId == null) {
-			throw new ServiceException("推送金蝶失败，单据未关联项目，无法确定金蝶组织编码");
-		}
-		ProjectApply project = context.projectCache().computeIfAbsent(projectId, projectApplyMapper::selectById);
-		if (project == null) {
-			throw new ServiceException("推送金蝶失败，项目[" + projectId + "]不存在，无法确定金蝶组织编码");
-		}
-		if (project.getBusinessDeptId() == null) {
-			throw new ServiceException("推送金蝶失败，项目[" + Func.toStr(project.getProjectName()) + "]未维护业务部门，无法确定金蝶组织编码");
-		}
+		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());
 		for (int depth = 0; dept != null && depth < 20; depth++) {
@@ -998,6 +989,38 @@ public class KingdeeApBillSyncSupport {
 		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");
 	}
 
+	/**
+	 * 金蝶部门编码：项目业务部门自身的金蝶编码（blade_dept.kingdee_dept_code，不上溯平台公司），
+	 * 用于付款申请单 awrp_department_number（部门.编码）；项目未关联/未维护业务部门/业务部门未维护金蝶编码时拦截
+	 *
+	 * @param projectId 项目id
+	 * @param context   金蝶同步上下文（缓存载体）
+	 * @return 部门编码
+	 */
+	public String kingdeeDeptNumber(Long projectId, KingdeeSyncContext context) {
+		ProjectApply project = this.requireOrgProject(projectId, context);
+		Dept dept = SysCache.getDept(project.getBusinessDeptId());
+		if (dept == null || Func.isBlank(dept.getKingdeeDeptCode())) {
+			throw new ServiceException("推送金蝶失败，项目业务部门[" + Func.toStr(project.getBusinessDeptName()) + "]未维护金蝶编码，请检查部门数据");
+		}
+		return dept.getKingdeeDeptCode();
+	}
+
+	/** 金蝶组织/部门编码共用校验：项目存在且已维护业务部门 */
+	private ProjectApply requireOrgProject(Long projectId, KingdeeSyncContext context) {
+		if (projectId == null) {
+			throw new ServiceException("推送金蝶失败，单据未关联项目，无法确定金蝶组织编码");
+		}
+		ProjectApply project = context.projectCache().computeIfAbsent(projectId, projectApplyMapper::selectById);
+		if (project == null) {
+			throw new ServiceException("推送金蝶失败，项目[" + projectId + "]不存在，无法确定金蝶组织编码");
+		}
+		if (project.getBusinessDeptId() == null) {
+			throw new ServiceException("推送金蝶失败，项目[" + Func.toStr(project.getProjectName()) + "]未维护业务部门，无法确定金蝶组织编码");
+		}
+		return project;
+	}
+
 	/**
 	 * 合同结算币种转金蝶币别代码（RMB 统一映射 CNY）
 	 *