Hello Jerry
The main reason why the UDA tool is there is to analyse the risks involved (to an extend) in an SAP system upgrade task.
Secondly only you know or the company you work with knows what the EP is used for.
If the EP is connected with other SAP systems then you need to make use of the UDA tool.
To the best of my knowledge there is no dependency involved.
So my answer should be go ahead with the upgrade.
The only thing that I will bother to cross check is the support for the OS and DB for the upgrade activity.
Regards
RB