Problem
For Domino 8.5.2 and 8.5.3, when load / apply fix pack installer on IBM i, the installation will update OSGI folders and files to reflect time stamp changes between Gold and fix pack version, this process also removes previously installed SLP folders and files in the same OSGI directory.
Resolving the problem
Customers need to install SLP last for Domino fix packs on IBM i deployment. If customers have installed SLP before, they need to reinstall SLP after finishing applied Domino fix packs.
via IBM SLP must be installed last for Domino 8.5.x FPs on IBM i – United States.