RE: Backflushing???

Backflushing is one of two common methods of reporting material and labor
usage against a job for a parent part. The other method is Issuing.
Different ERP systems have differing specific methods, but the general
concept is as follows:

In backflushing, the quantity of the parent part produced is blown down
through its bill of material structure determining how many subassemblies
and raw materials were consumed to produce the part. The required components
are then relieved out of inventory and the parent is issued into inventory.
Labor likewise is calculated through the routing. It's called backflushing
because material and labor are pulled through the system in batch after the
fact rather than pushed to the job through issuing.

Backflushing typically assumes that the parts were created per the BOM and
Routing standards. Exeptions are reported separately.

Issuing is used when there is less certainty that the parent was produced
according to the standard BOM and routing. It may also be used when high
levels of reporting control are desired, such as expensive parts or some lot
control environments.

These are generalizations. An example of an exception in BPCS would be that
material is allocated to a job in SFC according to the BOM and can be edited
before the job is closed. The backflush goes against the allocations which
behave like a BOM that is local to that job.

Best wishes

Geo.

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