Here you can read closed SPR and Fixes: Lotus iNotes Interim Fix 304.5aCHF1 for Domino 8.5.1 Fix Pack 3
This article is possibly outdated. It mentions an older version of a software or tool. I haven't checked if the links are still working!
IBM sold their collaboration tools portfolio to HCL Software in 2019, so the product names changed and most of the IBM links are no longer working.