Почему Ошибка при валидации XML?

Question

[Алексей Верховцев]

Скажите, пожалуйста в чём ошибка.

<?xml version="1.0" encoding="utf-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
	<xs:element name="timeTable">
		<xs:complexType>
			<xs:sequence>
				<xs:element name="offices">
					<xs:complexType>
						<xs:sequence>
							<xs:element name="office" minOccurs="1" maxOccurs="unbounded">
								<xs:complexType>
									<xs:sequence>
										<xs:element name="name" type="xs:string" />
										<xs:element name="address" type="xs:string" />
									</xs:sequence>
									<xs:attribute name="code" type="xs:string" use="required" />
								</xs:complexType>
							</xs:element>
						</xs:sequence>
					</xs:complexType>
				</xs:element>
				<xs:element name="lesson" minOccurs="1" maxOccurs="unbounded">
					<xs:complexType>
						<xs:sequence>
							<xs:element name="date" type="xs:date" />
							<xs:element name="time" type="xs:time" />
						</xs:sequence>
						<xs:attribute name="no" type="xs:ID" use="required" />
					</xs:complexType>
				</xs:element>
			</xs:sequence>
		</xs:complexType>
	</xs:element>
</xs:schema>

<?xml version="1.0" encoding="UTF-8"?>
<timeTable
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:noNamespaceSchemaLocation="lab-3-2.xsd">
>
	<offices>
		<office code="БК">
			<name>Комплекс "Бакунинский"</name>
			<address>ул. Бакунинская, 71</address>
		</office>
		<office code="РА">
			<name>Комплекс "Радио"</name>
			<address>ул. Радио, д. 24</address>
		</office>
	</offices>
	<lesson no="id1">
		<date>2013-07-06</date>
		<time>18:30:00</time>
	</lesson>
	<lesson no="id2">
		<date>2013-07-10</date>
		<time>18:30:00</time>
	</lesson>
	<lesson no="id3">
		<date>2013-07-11</date>
		<time>18:30:00</time>
	</lesson>
</timeTable>

Выдает вот
Validation of current file using XML schema:
ERROR: Element 'timeTable': Character content other than whitespace is not allowed because the content type is 'element-only'.