A SOAP-encoded array WSDL can declare a SOAP array using a wsdl:arrayType attribute inside a schema. The following example provides details.

<xsd:complexType name="UserObject">
    <xsd:sequence>
        <xsd:element name="userInformation" nillable="true"
          type="n5:ArrayOfKeyValuePair"/>
        <xsd:element name="username" nillable="true" type="xsd:string"/>
    </xsd:sequence>
</xsd:complexType>

<xsd:complexType name="ArrayOfKeyValuePair">
    <xsd:complexContent>
        <xsd:restriction base="soapenc:Array">
            <xsd:attribute ref="soapenc:arrayType"
             wsdl:arrayType="n5:KeyValuePair[]"/>
        </xsd:restriction>
    </xsd:complexContent>
</xsd:complexType>
   
<xsd:complexType name="KeyValuePair">
    <xsd:sequence>
        <xsd:element name="key" nillable="true" type="xsd:string"/>
        <xsd:element name="value" nillable="true" type="xsd:string"/>
    </xsd:sequence>
</xsd:complexType>

The following example shows how to create and access a SOAP-encoded array in BPEL 1.1.

<bpws:copy>
    <bpws:from>
       <ns1:userInformation soapenc:arrayType="com1:KeyValuePair[1]"
       xmlns:ns1="http://www.schematargetnamespace.com/wsdl/Impl/"
         xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"/>
         <ns1:KeyValuePair
            xmlns:ns1="http://www.schematargetnamespace.com/wsdl/Impl/">
            <key>testkey</key>
            <value>testval1</value>
          </ns1:KeyValuePair>
       </ns1:userInformation>
    </bpws:from>
    <bpws:to variable="Inputvar" part="userObject"
             query="/userObject/userInformation"/>

</bpws:copy>
<!--Update elements with SOAPENC Array-->
<bpws:copy>
    <bpws:from variable="KeyValueVar" part="KeyValuePair"
                query="/KeyValuePair/ns2:key"/>
    <bpws:to variable="Inputvar" part="userObject'
 query="//*[local-name()='KeyValuePair'][1]/*[local-name()='key']"/>
</bpws:copy>

<bpws:copy>
    <bpws:from variable="KeyValueVar" part="KeyValuePair"
                query="/KeyValuePair/client:value"/>
    <bpws:to variable="Inputvar" part="userObject"
   query="//*[local-name()='KeyValuePair'][1]/*[local-name()='value']"/>

</bpws:copy>
<!-- Append elements within SOAPENC Array -->
<bpelx:append>
    <bpelx:from variable="Inputvar" part="userObject"
                query="//*[local-name()='KeyValuePair'][1]"/>
    <bpelx:to variable="Inputvar" part="userObject"
              query="/userObject/userInformation"/>
</bpelx:append>