Handling CDATA in BPM Web Service call

The most common problem that we face while invoking a web service which expects some xml as a string in CDATA from oracle BPM/BPEL.
Like 

"<![CDATA[<UnderwriterAssignment><ApplicationID>XXXXXXXX</ApplicationID><Underwriter>XXXX</Underwriter></UnderwriterAssignment>]]>"

The above string has to be passed to the webservice as a string.

The problem here is the engine will convert the < and > to &lt; and &gt; while invoking. But the service may not be coded in such a ways that it accepts like that and the web service invokation will fail.

To resolve this, 

• Prepared (assign) the string that needs to be sent as CDATA.
• someString = "<UnderwriterAssignment><ApplicationID>ATL620007</ApplicationID><Underwriter>satishs</Underwriter></UnderwriterAssignment>"
• On the service call use ora:toCDATA() to convert it into proper CDATA without encoding
• like ora:toCDATA(someString).

This will not encode the string and it will pass as it is.