This could be related to BPCS version.

On 405 CD, the system parameters have a default warehouse, which populates a
couple files, then we wrote modification to substitute warehouse in those
files, because we are doing final production steps in a shipping warehouse,
using another one for sub-assemblies.

Each of our warehouses now only have one location, to reduce burden on
having to move the inventory around in BPCS. Previously BPCS would consume
from the first location alphabetically in warehouse, not from location where
we really consumed it. We have factory with bins of parts, reels of parts,
that could be in several different places where concurrent production
needing same components. BPCS not smart enough to automatically recognize
locations adjacent to different production operations.

Al Mac

-----Original Message-----
[] On Behalf Of
Larenzo Alexander
Sent: Wednesday, October 28, 2009 10:00 AM
To: BPCS ERP System
Subject: Re: [BPCS-L] Controlling Backlushing

Ok, thanks for the feedback. Last question, what determines the location it
will backflush from?

From: Al <macwheel99@xxxxxxxxxx>
To: BPCS ERP System <bpcs-l@xxxxxxxxxxxx>
Sent: Wed, October 28, 2009 10:42:26 AM
Subject: Re: [BPCS-L] Controlling Backlushing

After you have BOM & Routings & etc. setup correctly, and launch shop
orders, you can do maintenance on the shop orders (substitutions for
example) to uniquely change the rules on a particular part's production run.

Al Mac

-----Original Message-----
[] On Behalf Of
Larenzo Alexander
Sent: Wednesday, October 28, 2009 8:49 AM
To: BPCS ERP System
Subject: Re: [BPCS-L] Controlling Backlushing

Excellent explanation. Besides the "Must Single Issue" Flag is there
anything else effects wheater or not an item is backflushed. I belive the
Operation code tells it at what point to backflush. But I am about to
explain it to the users on the changes they need to make to an item to stop
it from backflushing and what to change if they want it to make flush.

Currently my understanding is the only flag is the should be worried about
the "Must Single Issue" in the BOM. (Item Master to but the BOM flag will
override the item master). Is that correct?


From: Les Mittman - SBC <lmittman@xxxxxxxxxxxxx>
To: BPCS ERP System <bpcs-l@xxxxxxxxxxxx>
Sent: Tue, October 27, 2009 5:14:08 PM
Subject: Re: [BPCS-L] Controlling Backlushing


The BPCS function is exactly opposite to your understanding.  This is a
common misunderstanding because of how SSA (nor Infor) chose to pose the

A Single Issue is where a specific Item/Whse/Lot/Location is specified for
issue.  That is, I tell BPCS exactly what I want to issue rather than
allowing Backflushing to suggest something.  So, the question "Must Single
Issue" means "is a Single Issue required".

If you say "Y", they you are saying that the Item must be single issued.
That is, it is not eligible for Backflush.  It will be skipped in the
Backflushing process and you will have to post a Single Issue in order to
consume it on a S.O.

If the setting is "N", then you indicate that the Item does not need to be
single issued.  That is, it is eligible for Backflush.

The Must Single Issue value in the Item Master will be used as the default
on the BOM.  And, it is the value on the BOM that will be carried to the
Shop Order Material Allocation (FMA) File.  It is the FMA value that will
control whether the Component will backflush.

I hope that my explanation clarifies the function of Must Single Issue.

Please feel free to contact me offline if you have some additional


Les Mittman


BPCS Consultant with over 20 years experience

-----Original Message-----
[] On Behalf Of
Larenzo Alexander
Sent: Tuesday, October 27, 2009 3:46 PM
To: BPCS Forum Post
Subject: [BPCS-L] Controlling Backlushing

What settings in BPCS controll if items backflush or not. I thought I
understood but apparently I dont.

I thought that if an Item's "Must Single Issue" Flag in the Item Master and
the BOM is set to "N" at the time that the Parent's Shop Order is created,
then the item will not backflush?

If any one can help me understand what I'm missing it would be greatly



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