Hello Artem,
Process failed while storing the file on storage system. Could be due to storage system not available when storage job ran, or issue on the file system. Please check to make sure <sid>adm user have proper permissions at location(directory) where archiving process is writing the files.
Try to execute the Storejob again either from the storage button or Management button in SARA, Select session in Management and then press Storage System button. in the window "Archive Administration:Store/Retrieve Files" press store files button. Process will try to store file again.
Another reason, you might have more than one application server and File system is not visible/available on other app servers.
Thanks,
Hardeep Bajwa