Continues consumption of BOM component

Question

Hello Experts,
We want when one product is produced continues material needed for this production to be consumed continues not to be available in the beginning of the order.
Example:
Product A with quantity of 1000 kg produced for 3 days. We have maintained distribution key in production version and this product is available not on the end of the order. On the First day there is available 3333 on second 6666 and in the end whole 1000kg. So far everything is perfect.
For production of Product A we are using Material B in a BOM and for 1000 kg of Product A we need 2000 kg of Material B. But system wants all 2000 kg of Material B to be available in the beginning of production. In reality we need in first day we need only quantity of B only for daily production of A which in our case is 3333 kg.
The question is how to make continues consumtion of material in the BOM (Material B) therefore required quantity to be spited per days in order not to be available in the beginning of production.
Thanks,
Kaloian

Answer 1

Hi Kaloian,
I am a bit confused, since in one statement you ask for 'continuous' replenishment, and in another statement you imply you want 'daily' replenishment.
Anyhow, I think what you are talking about is 'how do I tell MRP where and when to place my dependent requirements for orders that extend over multiple days'.  Your statements imply that you are using repetitive manufacturing and therefore are using backflush to execute.
The area where you determine Bill of materials requirements distribution is in configuration IMG>Production>Basic Data>Bill Of Material>Item Data>Item Data from Related Application Areas>Define Distribution Key.
You should be aware that these keys will also be applicable for the distribution of capacity consumption
You define the required Key(s) for each plant.  Within each Key, you define which function you want.  In your case, I suspect you want SAP's standard function S20, 'Equal Distribution'.  If existing functions are unsatisfactory, you can create your own.
Once you have created the key, you can now enter it into the item detail of the appropriate Bill of materials.  CS02>Select the item, then Goto>Item  The Distribution Key can be entered here.
http://help.sap.com/erp2005_ehp_04/helpdata/EN/ea/e9b4534c7211d189520000e829fbbd/frameset.htm
Regards,
DB49