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For any items that are often going negative, check out the following (this is 405 CD ... precise files may vary by BPCS version)

CIC.ICPLN
KFP.FWHSE
VLA.LACWHS   VLA.LACLOC for corresponding FSO

Also check the warehouse in customer orders ... it starts out defaulting based on facility rules, then if someone tries to move customer order to a different facility, they may overlook warehouses and profit center that were entered for the starting facility.

Basically you need to know, from the people in charge of different kinds of orders, if
(a) orders might ordinarily get started in one facility & moved to another
(b) when doing maintenance on orders, the fields that are by facility might get updated by accident

When BPCS was first setup, there should have been people with a thorough
understanding of what controls which warehouses used for which purposes,
then as time goes on, the company needs evolve, and changes might be made
by people who lack a good understanding of all the nuances.

If you have items which are not negative in item master, but are negative
by warehouse, location, or lot, then you need to trace the transactions on
some of the items involved.

If transactions, such as labor, do not get entered to BPCS in exact same
sequence as items made & consumed, you could have a temporary negative
math, but if there is a time in your processing, such as end of day, end
week, end month, when all transactions are supposed to be in the system,
and you still have negative quantities some place then that implies some
combination of:
* data got misposted
* some transactions never got entered
* some transactions were misreported
* an even # of people saw the same mistake and corrected it
* you have a bug in BPCS

Some BPCS programs support negative on-hand, negative allocations, etc.
some do not.  This can lead to some files being out-of-sync with each
other, which can be fixed by the reorganization programs, which assume the
most detail data is correct.  Depending on your version of BPCS, this might
not work correctly in all cases.

We have a rule imposed by top management.  They do not want to see negative
inventory on their end fiscal reports.  This means that as month end
approaches, there is a scramble to clean up the negatives, and we have
various reports listing them, to help with this task.  Seems to me, we
might be better off if we better understood all causes of negatives & kept
this cleaned up faster during the month.  There is a related issue with
shop orders, where we can have labor input for final operation before labor
input for earlier steps, so we do not want to be purging shop orders where
the earlier steps might not yet have gone in.

There are rules in the system parameters that may be insensitive to
multiple facilities.  We found it neccessary to do some modifications, in
which the timing of running those modifications is critical, relative to
other data flows.

Are you using reason codes with your miscelaneous inventory transactions?

>We have lots items in inventory that shows negetive in the system. What
>controls what warehouse is attached to a PO when it is created? What
>controls what facility/warehouse and Item is Back Flushed from? I have an
>idea but this negative inventory issue has been driving me crazy and I
>want to make sure with that I am on the right track getting the inventory
>straighten out.
>
>Thanks in advance
>
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