Below is the WSDL format for customerNames.
<xsd:element name="CustomersNames" minOccurs="0" maxOccurs="unbounded" type="xsd:string"/>
Please Advice that how can i pass input to test soap request using SOAPUI.
<CustomersNames>--inpuhere--</CustomersNames>
Try to pass Customer name like below.
<CustomersNames>Andrew</CustomersNames>
<CustomersNames>Mohan</CustomersNames>