Inventory Month End Close

Here's my problem.
We are using version 6.1, client server, on an AS400.  Every month when I try to
run the inventory month end close program (INV903) it does not successfully
complete.  When I ask out MIS manager why, he tells me that there probably is
someone on the system.  I have asked him to shut down the system to all users
except myself while this program is run but for some reason he can't figure out
how to do that.  I'm not a techie but there must be a way that I can run this
program on a regular monthly basis and be assured that it will successfully
complete.  Does anyone else out there have this problem and how can it be
solved?  Please answer in language that an idiot like me can understand so I can
relay it to MIS.
Thanks,
Ben Colletti
bcollett@tokheim.com
Materials Manager
Gasboy International Inc.

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