Fiori App Modification Best Practices?

Hi all,
We are implementing the Approve Travel Expense Fiori app and have encountered the following situation:
The business workflow requires that a rejected expense report have a comment associated with it. In looking at the code the confirmation dialog defaults to allowing the note to be optional. We can address this by setting the noteMandatory property to TRUE (the default is FALSE). But I'm not sure that this is the best solution. When SAP releases an update for the app the modification will be overwritten and someone has to remember to add that property again.
How do other organizations handle situations like this? Is there a best practice recommendation for when a minor code change is needed? Or is there a better way to implement this functionality that I'm not aware of?
Thanks,
Dave

Hi Dave,
SAP provide extensions points for these Fiori Apps, that may be useful to you http://help.sap.com/fiori_bs2013/helpdata/en/a1/611653f5bbef28e10000000a4450e5/content.htm
If you can't use one of the extension points then I think you will need to do what you've already done.
Hth,
Simon

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