<element ref="Transaction-Id" name="transaction-id" />
<element ref="Service-Date-Time" name="service-date-time" />
<element ref="System-Id" name="requester-id" minOccurs="0" maxOccurs="1" />
<element ref="System-Id" name="responder-id" minOccurs="0" maxOccurs="1" />
<element ref="Delivery-Address" name="delivery-address" minOccurs="0" maxOccurs="1" />
<element ref="Delivery-Service" name="delivery-service" minOccurs="0" maxOccurs="1" />
<element ref="Delivery-Address" name="billing-address" minOccurs="0" maxOccurs="1" />
<element ref="ILL-Service-Type" name="iLL-service-type" minOccurs="1" maxOccurs="unbounded" />
<element ref="External" name="responder-specific-service" minOccurs="0" maxOccurs="1" />
<element ref="Requester-Optional-Messages-Type" name="requester-optional-messages" minOccurs="0" maxOccurs="1" />
<element ref="Search-Type" name="search-type" minOccurs="0" maxOccurs="1" />
<element ref="Supply-Medium-Info-Type" name="supply-medium-info-type" minOccurs="0" maxOccurs="unbounded" />
<element ref="Place-On-Hold-Type" name="place-on-hold" />
<element ref="Client-Id" name="client-id" minOccurs="0" maxOccurs="1" />
<element ref="Item-Id" name="item-id" />
<element ref="Supplemental-Item-Description" name="supplemental-item-description" minOccurs="0" maxOccurs="1" />
<element ref="Cost-Info-Type" name="cost-info-type" minOccurs="0" maxOccurs="1" />
<element ref="Third-Party-Info-Type" name="third-party-info-type" minOccurs="0" maxOccurs="1" />
<element ref="Extension" name="iLL-request-extensions" minOccurs="0" maxOccurs="unbounded" />
</sequence>