<xsd:complexType name="POSSecurity_Type"> <xsd:sequence> <xsd:element ref="PSSNetworkType" minOccurs="0" /> <xsd:element ref="PSSMsgMAC" minOccurs="0" maxOccurs="unbounded" /> <xsd:element ref="PSSMsgEncryption" minOccurs="0" maxOccurs="unbounded" /> <xsd:element ref="PSSCATSecLevel" minOccurs="0" /> </xsd:sequence> </xsd:complexType>