Advice on Type of Mapping

Hi Friends,

I have scenerio like this,

IDOCS will be collected in BPM for 10 mins and them output will be in XML file which has details of all collected IDOCS.

Output will be like this

<Message list>

Message

</Message list>.

I have many more feilds with in Message.

If BPM collects 4 IDOCS out of which 3 are USD and 1GBP.

I nedd 2 Message tabs inside <Message list> with Idocs description in side message.

Is it possible by Graphical mapping..

Will be help full if u can send me some blogs.

Thanks in advance.....