Hi Adrian,
Unfortunately I could not find any standard role for Transaction IFCU.
I'll share with you the method for searching, I've used.
Use Tcode PFCG.
Click on 
on the application toolbar. Here in pop-up give your Tcode (IFCU).
We do not get any results.
To cross-check, you can use some other Tcode like IE31 , you will be given:
You can perform such a search via Tcode SUIM too.
Here Go to Roles node, Select By Transaction Assignment --> give IFCU and Execute.
Here too I could not get any results.
(Here too you can cross-check with value IE31)
Hope this information is of some use to you.
Jogeswara Rao K
