Backflush warehouse/bin setup for Job materials

Hi everyone,

When I complete a job, the materials for that job are deducted from the inventory through a backflush method.
Where do you set the warehouse/bin from which this deduction is made?
We are currently processing Job materials through “Mass issue to Mfg”. In this backflush method, isn’t “Mass issue to Mfg” unnecessary?

Thanks in advance!

There is a hierarchy

  1. Input warehouse/bin of the Resource used to report labor to the job operation and if the available quantity on hand is greater than zero.
  2. Input warehouse/bin of the Resource Group used to report labor to the job operation and if the available quantity on hand is greater than zero.
  3. Uses the backflush warehouse/bin of the Resource used to report labor to the job operation.
  4. Uses the backflush warehouse/bin of the Resource Group used to report labor to the job operation.
  5. Uses the Primary Bin defined in the primary bin field located in Warehouse Maintenance for the associated job material warehouse regardless of the unit of measure for the component part being backflushed.
  6. Uses a Part Bin associated to the job material warehouse using the same tracking UOM for the component part being backflushed and if the available quantity on hand is greater than zero.
  7. Uses the First Bin in the job material warehouse that has an available quantity, regardless of unit of measure.
  8. Do not backflush material.

Thank you for your detailed explanation.
Actually, the reason I asked this question was that the backflush setting of outsourcing production in my Epicor was a little weird. I joined the company after this setting and I was wondering why it was set up like this.
As you can see in the screenshot below, the Outsourcing Production Resource Group’s backflush warehouse/Bin is set to In-house warehouse/Bin. So we’re using “Mass issue to Mfg” to move our inventory.
If I change the backflush warehouse/Bin of this outsourced production resource to that outsourced warehouse/Bin, do I not have to use “Mass issue to Mfg” anymore?
And one more question, we are adjusting the raw materials in Job Entry for various reasons (delete or add other raw materials). In this case, are the materials that are backflushed from the job the adjusted materials of this job or the same material as the BOM?
Thanks in advance!

Subcontract operations don’t backflush material.
You will need to have a standard operation backflush the material or mass issue the material.*

As always - go into your test/pilot database and test all changes prior to putting this into live.

*Note - I recall this - I didn’t test it on my own, maybe things have changed