You attempted to restart a checkpointed data transfer command and the restart marker that was received at the server is incorrect.
The data transfer command is not restarted. FTP continues.
Make sure that the hlq.FTP.CHECKPOINT data set is valid. The data set name might be hlq.FTP.CHECKPOINT or, if your path points to a PDS, the name will be hlq.pds_name(CHKPOINT). This data set was created by the client during a checkpointed command and must not be altered after the checkpointed command is unsuccessful and before the restart is entered. Failure to observe this procedure will affect the restart.
None.