This usually means a part of the sequence is missing or renamed incorrectly. Make sure the filenames are identical except for the numbers at the end.
Here is a quick guide on what these files are and how to get to the data inside. What is a .001 File? SS-Isa-017_v.7z.001
Are you trying to access a specific project or dataset hidden in that archive? This usually means a part of the sequence
To extract it, you usually need subsequent parts (e.g., .002 , .003 , etc.) in the same folder. Step-by-Step Extraction you usually need subsequent parts (e.g.