what gives you the impression that the path was not found?
if it would be the case, then you could see an error message in the job log.
Maybe it was in the log of the write job, but you just posted the log of the sub job twice.
have you ever tried it without the part left of \usr\saparchive\....?
the write job usually writes to the SAP file system, finally the STO job moves the archive from the file system to a content repository elsewhere.