OPM Incremental Backflush is Rounding Up Phantom Item Actual Quantities When Actual Quantity Becomes Close to Planned Quantity
(Doc ID 2857554.1)
Last updated on MARCH 22, 2022
Applies to:Oracle Process Manufacturing Process Execution - Version 12.2.9 and later
Information in this document applies to any platform.
On : 12.2.9 version, Batches
When doing incremental backflushing in parent/phantom batches, once the phantom item gets within a certain percentage of the planned or WIP planned qty, the next incremental backflush rounds the phantom item actual qty up to the WIP planned qty, even though the backflush should have been for less.
Customer has a parent and phantom batch. Phantom item and other ingredients are Incremental consumption/yield type. They do 39 incremental backflushes, driven from the product of the parent batch, all for the same quantity (2.4 percent of the plan), and everything works fine. This brings the actual quantities to 93.6% of the WIP plan qty. When doing the 40th backflush, for the same quantity, another 2.4%, everything works the same as before for the non-phantom items, but the transactions created for the phantom item are for a greater quantity, approximately 2.67 times the quantity of all the previous transactions. This brings the actual quantity for the phantom item up to exactly equal the WIP Plan Qty. All other items are backflushed correctly, and have not yet reached their WIP Plan Quantities.
Then, any subsequent backflushes do not create any new transactions for the phantom item and do not update the phantom's actual qty, although they continue to update the other item's quantities normally.
Expect the phantom item to be backflushed the same way as all the other items, not to have one backflush almost 3 times as much as it should. Also expect that backflushing will continue to affect the phantom even after its WIP plan qty has been reached.
The issue can be reproduced at will with the following steps:
1. From Production Supervisor responsibility, retrieve batch on Batch Details (Production Supervisor > Batch Details).
2. Backflush more than 95% of the WIP Plan Qty of the items but less than 100%(Actions > Incremental Backflush). The phantom item is seen to have been backflushed to the full WIP Plan Qty.
2. Backflush again, and see that the phantom item is no longer backflushed.
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