Need to change the below settings in client configuration.Increase the size for maxReceivedMessageSize, maxBufferSize, maxBufferPoolSize, maxArrayLength, maxStringContentLength in Web.Config<bindings>
    <basicHttpBinding>
        <binding name="basicHttp" allowCookies="true" maxReceivedMessageSize="20000000" maxBufferSize="20000000" maxBufferPoolSize="20000000">
            <readerQuotas maxDepth="32" maxArrayLength="200000000" maxStringContentLength="200000000"/>
        </binding>
    </basicHttpBinding>
</bindings> 
