: This is the official Sony Title ID for the North American retail release of WWE 2K20. Title IDs are region-specific; using a CUSA15666 file means your game content and DLC must match the North American region to function properly.
It looks like you are referencing a naming convention for WWE 2K20 , specifically the AUC region (Asia/Australia – often used for Middle East/SE Asia releases). WWE 2K20 -A0100-V0100- -CUSA15666- PS4 PKG -AUC...
Approximately 50 GB of free space is required on your PS4. : This is the official Sony Title ID
Stone Cold Steve Austin, The Rock, Undertaker, Mankind, and Ultimate Warrior. Technical Specifications & PKG Installation Notes Approximately 50 GB of free space is required on your PS4
: Short for "Package," this is the standard file format used by the PlayStation OS to install games, updates, and downloadable content (DLC) onto the system's hard drive. Technical Prerequisites for PS4 PKG Installation
The string also reveals the . Sony intended the PKG to be locked to a specific console, encrypted with a key only a disc drive could read. Yet here, -CUSA15666- is passed around like a secret handshake. The scene took Sony’s proprietary, encrypted, licensed product and turned it into a naked, open directory listing.