For users of a modified PlayStation 3 (using or Custom Firmware (CFW) ), a .rap file is a digital license required to decrypt and play games installed as PKG files, such as Grand Theft Auto: San Andreas
Why a Rap File matters
Error 80010017 (license missing).
Error 80029513 (invalid or revoked license).
GTA San Andreas PS3 RAP File: A Comprehensive Guide
The PS3 version of GTA: San Andreas is controversial. Unlike the flawless PS2 Classic on the PS3 store, the 2015 "remaster" (the one with the red menu icon) is a port of the troubled mobile version. Gta San Andreas Ps3 Rap File