Plant MRP Area
- Automatic Creation: Each plant is automatically assigned a unique MRP area with the same number.
- Comprehensive Coverage: The MRP area includes all storage locations and subcontracting stocks within the plant.
- Selective Exclusion: To exclude specific storage locations from MRP calculations, use transaction OMIR.
Storage Location MRP Area
Path: SAP Customizing → Materials Management → Consumption-Based Planning → Master Data → MRP Areas → Define MRP Areas for Plant/Storage Locations
Transaction: S_ER9_52001482
- Created Storage Location MRP Area: We established a dedicated MRP area (BA2000) to manage inventory planning for storage location TG00, which is designated for trading goods. This allows for tailored planning based on the specific characteristics and requirements of trading goods.
Asignement of the Material to the new MRP area created :
we assigned this new MRP Area to the material BOLT1000 via transaction MM02 view MRP1
Once we fill the different field required and save, the MRP area will be available at the level of the material, transaction MD04
Define Special Procurement Types
Path: SAP Customizing → Materials Management → Consumption-Based Planning → Master Data → Define Special Procurement Types
Special Procurement Type (SPK): A new procurement type key (SPK) was created with an automatic transfer process between the plant and the storage location. The following parameters were configured:
Then we used this parameter at the level of the material master, transaction MM02 view MRP 2
Once I defined the safety stock at the MRP area level and run the MRP, the system proposed a purchase requisition.
to make the process straightforward, we changed the stock transfer type at the level of the Spectial procurement.
After the MRP run the result was as following, the system create automatically a transfer order
Cross plant view activation
in Customizing under Production → Material Requirements Planning → Evaluation → Display Material Groupings.
So the result will be as following, we’ll be able to display also the MRP element related to the MRP Area BA2000 on the same screen of the Plant Mrp Area :
Deletion of MRP Area assignments to material
When an MRP Area is assigned to a material, an entry is created in table MDMA and we can find this assignment when we access tab MRP 1 of the material master. If the MRP Area will no longer be used for this material, we can set the deletion flag for the material master assignment (as shown in the figure below)
Most important table to use for MRP Area Management
MDMA – MRP Area for Material
DBPR – MRP Area Material Index for Forecast
PROP – Forecast Parameters
PROW – Forecast Values
PROH – Basic Forecast Values
DBPROF – Forecast Error for MRP Areas
DBPRON – Forecast Errors and Exception Messages
DVER – Material Consumption for MRP Area
MDKPDB – Header Data for MRP Documents
MDFDDB – Firming Data of MRP
PBID – Planned Independent Requirements Index (PBID)
CDPOS – Document Items
CDHDR – Change Document Header
Mass processing of MRP Areas
It is a very useful functionality and it usually needed by customers implementing S/4HANA.
SAP ERP offers a transaction called MDDIBE, which allow the mass processing of MRP Areas, including features like creating, changing, and setting the deletion indicator of the assignment of a MRP Area to one or more materials.
Thank you for sharing