The blocksize parameter was missing from an XLMT DCB command. This is a violation of the load module transfer protocol.
Load module transfer processing is aborted and the file transfer is completed using base processing. Any MVS™ Load modules transferred will not be executable on the target system.
Contact your system programmer.
Ensure that the server and client are both Communications Server for z/OS®. If they are not, contact the vendor of the non-IBM FTP program for service.