| Planning
separately via Storage Location or Vendor with MRP Area
Steps 1 :- You must convert the existing planning file (table MDVM) to the new planning file (table DBVM) in order to be able to use MRP areas in materials requirements planning. Transaction OM0F. 1. During the conversion, the system creates a plant MRP area for every plant. 2. The existing planning file entries are copied from the planning file used up to now into the new planning file. 3. The system deletes the planning file that had been used up to now after the conversion has taken place. 4. At client level, the indicator Planning file entries for MRP area converted is set in a system table. This indicator causes material requirements planning to be carried out using planning file entries at MRP area level from this point onwards. 5. The report also converts the individual customer planning file entries at plant level to individual customer planning file entries at MRP area level. Steps 2 :- Activate MRP Area in SM30 - T000MD. (Material requirements planning with MRP areas cannot be reversed once activated). Steps 3 :- During conversion in Steps 1, SAP will automatically create a MRP area for all your existing Plants. Now, you can start creating the MRP area for storage location or vendor to be planned separately. That's is the whole purpose for using MRP area. Define MRP Area in SM30 - V_MDLV. Here you define whether the MRP area type :- 01 - Plant 02 - Storage Location 03 - Vendor Steps 4 :- In Material Master MRP 1, the MPR area section will appear once you successfully complete the above Steps. Assign MRP Areas to Materials You assign the MRP areas to the materials by creating an MRP area segment for each MRP area in the material master. You can assign several MRP areas to one material. MRP with MRP areas for the material is not activated until an MRP area has been assigned to a material. If you have not assigned an MRP area to a material, that is, you have not created an MRP area segment in the material master, the material will continue to be planned in the plant MRP area only. If you have assigned an MRP area to the material, the system can plan it in the plant MRP area and in the assigned MRP area. You can display an overview for all materials in an MRP area. To do this, you go into Customizing for MRP and choose the IMG activity Define MRP areas. Call up an MRP area by double-clicking and choose Material overview for MRP area. Steps 5 :- Check Storage Locations If you have already entered a storage location in the BOM (BOM item), in the work center (supply area) or in the production version, you should check whether this storage location is the storage location for the MRP area that you have assigned in the material master. The materials are assigned to an MRP area via the storage location that the system determines during the planning run. You should therefore check the storage locations that you have maintained in the material master. The storage location in the material master must be a storage location for the MRP area, for which you have created an MRP area segment in the material master. You can therefore ensure that material requirements planning will be carried out for the correct MRP area The MRP area represents an organizational unit for which material requirements planning is carried out independently. Basically, there are three types of MRP area: Plant MRP Area The plant MRP area initially contains the plant together with all its storage locations and stock with subcontractors. When you have defined MRP areas for storage locations and for subcontractors and you have assigned the materials, the plant MRP area is reduced by exactly this number of subcontractors and storage locations. This is because they are now to be planned separately. MRP Areas for Storage Locations You can define an MRP area that consists of a particular storage location, by creating an MRP area and assigning the storage location to it. Material requirements for this storage location are then planned separately from the rest of the plant. You can also group several storage locations into one MRP area, by creating an MRP area and assigning the storage locations to it. These storage locations are then planned together. A storage location of a plant may be assigned to only one MRP area. MRP Areas for Subcontractors You can also define an MRP area for each subcontractor. A subcontractor may be assigned to only one MRP area. An MRP area of the subcontractor type may also only contain one subcontractor. MRP areas of the storage location or subcontractor type are only suitable for: 1. components that are planned and produced for stock 2. finished products that are planned and produced for stock. By assigning a storage location in a sales order or by entering an MRP area when creating the planned independent requirements, you can define whether a material is planned in the plant MRP area or in the MRP area of the storage location. Material requirements planning for each MRP area allows you to have specific control over the staging and procurement of parts produced in-house and purchased parts for each shop floor and assembly area. If, for example, you define an MRP area for the production storage location of an assembly line, the system plans the material requirements for the assembly line separately from all other requirements. Example: Subcontractor You can also carry out planning for components to be provided in subcontracting using an MRP area by defining an MRP area for every subcontractor and assigning the components to be provided to the MRP area of the subcontractor. You therefore plan the requirements to be provided for these components for one subcontractor separately from all other requirements. Depending on the requirements situation, the system creates either stock transfer reservations from the plant to the stock of material provided of the subcontractor or it creates purchase requisitions within subcontracting/third-party order processing, according to the special procurement key settings. The planning run takes into account the planning with MRP areas as follows: If you do not enter a separate scope of planning, the system plans the whole plant, that is, all MRP areas in the plant, during the total planning run. If you want to carry out a total planning run for a particular MRP area only, you must specify the required MRP area in the scope of planning. During single-item, multi-level planning, the system plans the selected material in the MRP area entered. In addition, the system takes into account planning file entries from other MRP areas, for example, if the material is to be procured using stock transfer. During single-item, single-level planning, the system plans the selected material in the MRP area entered only. You define the MRP areas in Customizing for MRP. You can thereby assign the following to an MRP area: one or more storage locations (example: you want to carry out planning for a particular assembly line and therefore assign a production storage location to the MRP area) a subcontractor. You assign the various MRP areas to the materials in the material master. For this, you create an MRP area segment for a material for every MRP area, in which it is used. In this MRP area segment, you can define MRP parameters such as, for example, the lot size or MRP type. This allows you to plan the material differently in the MRP area from how you plan it in the plant MRP area. MRP with MRP areas for the material is not activated until the material has been assigned to an MRP area. If you have not assigned a material to an MRP area, that is, you have not created an MRP area segment in the material master, the material will continue to be planned in the plant MRP area only. If you have assigned an MRP area to it, the system can plan it in the plant MRP area and in the assigned MRP area. SAP Production Planning Books
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