ETERNUS SF XL-DATA/MV V13 User's Guide

4.3.5 Multiprocessing Data Transfer

If the system load is heavy, the partitions may not be released even when terminating the mftfsend command or mftfrecv command.
Executing the mftfsend command or mftfrecv command repeatedly at a multiprocessing level of 16 in this state outputs a KJU4190 message (detail code = 15) and the data transfer fails. If this is the case, wait awhile before reexecuting the data transfer commands or execute the data transfer commands at a multiprocessing level of 15 or less.