How to ensure Stack XML is correct

Hi All,

We are planning to upgrade NetWeaver 2004 with XI 3.0 to NetWeaver 7.3 (Usage Type PI).

In order to upgrade, I need to generate a stack XML file using Solman. How can I ensure that the stack XML file is accurate and performs upgrade to PI 7.3? Are there any other sources other than Solman from where I can generate the XML file.

regards

AKD