f

app/main/api/internal/logic/admin_order/adminrefundorderlogic.go

@@ -75,10 +75,13 @@ func (l *AdminRefundOrderLogic) getAndValidateOrder(orderId int64, refundAmount
 	return order, nil
 }
 
-// handleAlipayRefund 处理支付宝退款
+// handleAlipayRefund 处理支付宝退款（2026-02-02 18:26 前的订单走 bak 商户号）
 func (l *AdminRefundOrderLogic) handleAlipayRefund(order *model.Order, req *types.AdminRefundOrderReq) (*types.AdminRefundOrderResp, error) {
-	// 调用支付宝退款接口
-	refundResp, err := l.svcCtx.AlipayService.AliRefund(l.ctx, order.OrderNo, req.RefundAmount)
+	orderPayTime := &order.CreateTime
+	if order.PayTime.Valid {
+		orderPayTime = &order.PayTime.Time
+	}
+	refundResp, err := l.svcCtx.AlipayService.AliRefund(l.ctx, order.OrderNo, req.RefundAmount, orderPayTime)
 	if err != nil {
 		return nil, errors.Wrapf(xerr.NewErrCode(xerr.SERVER_COMMON_ERROR), "AdminRefundOrder, 支付宝退款失败 err: %v", err)
 	}

app/main/api/internal/logic/pay/alipaycallbacklogic.go

@@ -218,7 +218,9 @@ func (l *AlipayCallbackLogic) handleRefund(order *model.AgentMembershipRechargeO
 			return refundErr
 		}
 	} else {
-		refund, refundErr := l.svcCtx.AlipayService.AliRefund(ctx, order.OrderNo, order.Amount)
+		// 代理会员订单以创建时间为准，2026-02-02 18:26 前的订单走 bak 商户号
+		orderPayTime := order.CreateTime
+		refund, refundErr := l.svcCtx.AlipayService.AliRefund(ctx, order.OrderNo, order.Amount, &orderPayTime)
 		if refundErr != nil {
 			return refundErr
 		}

app/main/api/internal/logic/pay/wechatpaycallbacklogic.go

@@ -221,7 +221,9 @@ func (l *WechatPayCallbackLogic) handleRefund(order *model.AgentMembershipRechar
 			return refundErr
 		}
 	} else {
-		refund, refundErr := l.svcCtx.AlipayService.AliRefund(ctx, order.OrderNo, order.Amount)
+		// 代理会员订单以创建时间为准，2026-02-02 18:26 前的订单走 bak 商户号
+		orderPayTime := order.CreateTime
+		refund, refundErr := l.svcCtx.AlipayService.AliRefund(ctx, order.OrderNo, order.Amount, &orderPayTime)
 		if refundErr != nil {
 			return refundErr
 		}