How to 'fix' an special procument key according to sales order type ?

Question

Hi Gurus,
I need some help to solve an issue: how to "force" MRP to use a special procurement key (SOBLS) when the demand was originated by sales order type = "XYZ".
Limits:
- this is a MTO scenario, so MRP area is not an option (as far as I know)
- due to the huge quantity of materials we cannot consider create new materials.
Scenario:
1. 'Plant A' and 'Plant B' can produce material 'AAAA'
2. Only 'Plant A' is allowed to invoice.
3. Material 'AAAA' produced in 'Plant A' cannot be sold, they will be used as components to other materials.
4. Any external demand (sales) of material 'AAAA' must be handle by 'Plant B'.
In other words: If a sales document (order type 'XYZ') ordering 10 units of material 'AAAA' is posted, my MRP (on plant 'A') must undestand that a purchase requisition (stock transfer, special procurement key 'Z1') needs to be created. All other demands will create Planned Orders (to be converted to Production Orders).
I already tried to evaluate BADIS: MD_CHANGE_MRP_DATA, MD_ADD_ELEMENTS, MD_MODIFY_SOURCE, MD_PLDORD_CHANGE and MD_MRP_PARAMETERS ... with little success.
Any clue will be appreciated.
Regards,
Jone.

Answer 1

- "material AAAA" is a spare part and, also, an item BOM of "FG 1010"
Lets imagine that:
- "material AAAA" has MARC-BESKZ = 'E', MARC-SOBSL = '' and MARC-SBDKZ = '1' in both Plants,
- no stock is avaliable,
- there is a MTO Production Order of 'FG 1010' is demmanding 3 units of "material AAAA",
- there is a sales order (spare parts) is requesting 7 units of "material AAAA".
After a full MRP running (with RM61X-BANER=3), we would like to have:
Plant A:
Sales order segment 1 (MTO from 'FG 1010'):
- Planned order of 3 units
Sales order segment 2 (Spare parts sales Order):
- Purchase Requisition of 7 units.
Plant B:
Sales order segment 2 (Spare parts sales Order):
- Purchase Requisition of -7 units.
- Planned order of 7 units.
Sales org does the invoicing not the plant and you can set the delivering plant as plant B directly in the material master. But that's not feasible. Right now I would suggest you try creating (if they don't already exist) two special procurement keys first 40 and assign it in material master for plant A. Then other 52 assign it in item detail for the component in the BOM for the FG since it is MTO. For plant B not SPK is required from what you mentioned.
Edited by: Jeevan Sagar on Jan 11, 2012 3:49 PM