"CData elements not valid at top level of an XML document. Line 1, position 3" Error in WCF

Hi

I have an endpoint to pass xml... The service is in stream mode.

The error that I receive is: "CData elements not valid at top level of an XML document. Line 1, position 3" Error in WCF

This is my configuration.

<binding name="BasicHttpBindingStreamed"  maxReceivedMessageSize="2147483647"  maxBufferSize="2147483647" transferMode="Streamed" maxBufferPoolSize="2147483647" ><readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647"
             maxNameTableCharCount="2147483647"/></binding>

I change the service to buffer mode, and I don't receive errors.

I followed this link: https://stackoverflow.com/questions/12474530/xml-errors-thrown-via-ws-fed-authentication

I undestand that is better to use stream mode instead to buffer mode, but I have to use buffer mode.