Sc25042-returnl.part09.rar -

This is the 9th segment of a multi-part RAR archive. The "Write-Up" (Technical Overview)

This file cannot be used alone. To access the contents, you must have all parts ( part01 through the final part) in the same folder. Opening part01 with a utility like WinRAR or 7-Zip will automatically "stitch" the parts back together to recreate the original file (usually an .iso or a folder). sc25042-RETURNL.part09.rar

The string sc25042-RETURNL is a Release Name. While specific details on this exact ID are often kept within private trackers, here is how the name breaks down: This is the 9th segment of a multi-part RAR archive

Likely a internal release ID or a tracker-specific code. sc25042-RETURNL.part09.rar