ABAP XML Output

Hi All,

I need to know how to create specific XML schema output. i tried with FM available and classes available but i need the output in the following format.

<?xml version="1.0" encoding="UTF-8" ?>

- http://schemas.ariba.com/IS/1.0.0" xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance" xmlns:xtc="http://schemas/ariba/xt/core" xmlns:xtd="http://schemas/ariba/xt/datatypes" xmlns:dts="http://schemas/ariba/xt/database" msgid="yw890-hplw47j-904gk4n-s3n4mzq2">

- <ProcessSetProperties null_representation="indirect" process_scope="Entity">

<DateTimeFormats dateTimeFormat="YYYY-MM-DD HH24:MI:SS" />

<Source>SG</Source>

<Message_Version>1.0.0</Message_Version>

I need ABAP code for the above format.

Thanks in Advance

Anney