You do not need to activate RAP files one by one. Place 50+ .rap files into the /exdata folder, run your activation tool once, and all 50 licenses will install simultaneously.
These are "Rif Activation Protocol" files. They are tiny (usually exactly 16 bytes) and contain the decryption key needed to activate the corresponding PKG [2, 8]. Without the RAP file, a PKG will install, but the PS3 will display an error message stating that the content has not been renewed or purchased when you try to launch it [5, 8]. How to Install PKG and RAP Files pkg rap files ps3
You can build a thousand houses (install PKGs), but without the keys (RAPs), you cannot get inside. In the CFW/HEN world, you must install the PKG first, then activate the RAP second. The order matters. Activating a RAP before installing the PKG does nothing, because the license has no file to attach to. You do not need to activate RAP files one by one
When you install a PKG from a PSN game or DLC, the PS3 creates a license file on the hard drive. An official license is tied to your PSN account ID and activation. Pirated or backup licenses rely on “fake” or “shared” RAP files. They are tiny (usually exactly 16 bytes) and
: If licenses aren't working, tools like Apollo Save Tool can be used to activate your PS3 account offline. Help:Installing Game Updates - RPCS3 Wiki