SFMC323E //SYSFTPD is inaccessible to USS because it is not allocated DISP=SHR.
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 VFTP client. The USS component of the FTP API will not be able to access the //SYSFTPD dataset because its JCL DISPosition makes it non-shareable.