SFMC325E //SYSFTPD is inaccessible to USS because it is a concatenation.
SFMC913I Recommended action: Specify ;!PARM SHAREAS and retry.
Explanation: Specifying ;!PARM NOSHAREAS has created a problem for the USS component of the FTP API because it is being forced to run in a separate address space from the SFM client. The USS component of the FTP API will not be able to access the complete //SYSFTPD dataset because it is a concatenation of more than one file.