It looks like you had opened a ticket with Support to request additional details. Thank you for doing so. For the benefit of those on the Community, here was the recommendation from Support:
Is the environment on this system setup for running msend/mpsoter on a remote system (MCELL_HOME variable, etc) as per the documentation at the
There are other customers doing this, as there has been a discussion on Communities regarding this - https://communities.bmc.com/docs/DOC-11034.