: The .003 file contains only a middle portion of the total data.
When a file is too large for a single transfer, software like 7-Zip or WinRAR splits it into numbered parts (e.g., .001 , .002 , .003 ).
: Ensure the filenames are identical except for the numeric extension. If one is named PEY(1).7z.001 and the other is PEY.7z.002 , the extraction will fail.