Blackflushing does not mean returning of material to
With backflush infact the component allocated in BOM
get consumed at the time of operation/order confirmation.
If you set the backflush then all materials allocated
to the Work Order will get issued from stores automatically. So there is no
need to do a separate MB1A or MIGO Goods Issue.
To return item to store you will have to do a reversal
from WO back to stores using Movement Type 262.
I want to issue spares in advance to engineers without
a service work order....Later on the spares will get consumed or will get
returned. How do I do it...and what is the Movement type to be used for issuing
and reversing........can any one help.
Still I have problem in back flushing. Suppose I made
the indicator of backflush in creation of order, then I completed technically,
then the actual cost of material not updating, (Note I have not posted the
material in MB1A) what is the problem, pls tell me.
Did you confirm your maintenance order? Unless you
confirm it (IW41) your actual cost will not be updated. Backflushing is a tool
so that during confirmation you will not anymore input your
materials. System will confirm your consumption base on
the order (IW31) you have created.
I believe T-Code IW41 is used to confirm the operation
and not for materials. When backflush indicator is set in the order for the
components reserved then MB1A need not be done and when we say determine cost
thru the main menu, the material cost should appear.
Actually IW41 works like CO11 (PP module), when you
tick the backflush indicator in the order creation the system will automatically
copy those materials when you confirm it.
Try doing these steps:
1. Create order (IW31)
2. Assign a component to the order and tick the backflush
field. (make sure that the component you assign has stock and valuated in the
material master - check it thru MM03, accounting and costing fields)
3. Check availability of material and release
4. Goto IW41, enter hours and tick the material icon on
the tool bar (you would notice that the materials that was backflush are already
copied in the confirmation, try unticking the backflush icon in IW31 and you
would notice that the component field will be empty because no material are
6. Check cost and it would reflect the material consumed.
Actually you don't need to go to the component field for it to confirm your
consumption. It will automatically post all materials backflushed upon saving
your confirmation in IW41. In short you still need to confirm your order, thru
IW41, for the materials to be consumed. MB1A are actually used for set-up where
in the one issuing the material to the order are not the same person who is
confirming the maintenance order.
I hope this clarifies everything.
Thank you so much. Yes it works......thanks a ton.
But I have a suggestion. I did whatever you said....but
what I noticed was once I reserve a component in the order thru IW31 trasanction
and release the order and go to main function and say determine cost, the
materials cost is automatically copied into the order....Yes the material should
exist in the material master.......
I feel in the same order when we want to calculate the
labour charges involved in particular operations we need to go thru IW41 and
confirm the operations so that we can get the labour charges for the personnal
involved in that order.(this will be done by way of calculating the Activity
Your right material cost is automatically copied into
the order thru IW31 but these costs are only planned cost. Meaning no accounting
documents is being created and no materials being consume to the order only
If you want to have the actual cost reflected you have
to go thru IW41 first.