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SAP PP MRP Area 基础知识

ERP 作者:DicksonJYL560101 时间:2017-03-01 14:02:48 0 删除 编辑


SAP PP Basics of MRP Area


 


https://blogs.sap.com/2015/07/01/basics-of-mrp-area/


 


The purpose of this document is to explain the basics of MRP area, steps involved in activating MRP area and to use it in different possible ways.


As we know MRP runs at plant level (centralized), but as per business need we may have to plan MRP for individual & independent planning areas (decentralized). This can be achieved by activating MRP areas. These MRP areas are fully configurable organizational units within ECC where MRP can be run individually. So we can broadly classify running MRP in 2 major ways.


 


MRP1.PNG


 


  • MRP at plant level: The system adds together stocks from all of the individual storage locations to determine total plant stock. The requirements are combined in the planning run and procurement elements are created for these pegged requirements with unknown sources. Individual storage locations can be planned separately or be excluded from planning.


Illustration:


MRP1_1.PNG


  • MRP area level: Only the stocks from the storage locations or subcontractor assigned to the respective MRP area are taken into account. The requirements in this particular MRP area are combined and procurement elements are created for them. This enables us to plan material requirements specifically for certain areas (MRP areas).


 


Illustration:


MRP_Area.png


You can define MRP areas within a plant and carry out MRP specifically for that particular area, for example in above illustration, for MRP area M0001 can be planned independently without running MRP for plant FP01.


In each MRP area you can control staging and procurement of parts that are produced in house or externally. All MRP procedures are supported by MRP areas and one can display the result of MRP run for each MRP area.


MRP Area (definition):


As per SAP, MRP Area represents an organizational unit for which material requirements planning is carried out independently”


 


MRP Area is functionality for special planning process that enables you to carry out planning not only at plant level but also at different planning levels (eg, storage location & sub-contractors). There are 3 types of MRP areas in SAP


  • Plant MRP Area
  • MRP Areas for storage location
  • MRP Areas for Subcontractors


 


Plant MRP area:


 


MRP area can be created at plant level. On doing so, system combines all its storage locations and stock with subcontractors under that MRP area. When you define MRP areas for storage locations and for subcontractors and assign material to newly created MRP areas with in plant then the plant MRP area gets reduced by exactly the numbers of subcontractors and storage locations. This is because they will now be planned separately in new MRP areas.


 


MRP area for storage location:


 


MRP area can also be defined for storage location or multiple storage locations. Material requirements for this storage location are then planned separately from the rest of the plant. Important point to note here is that you can assign 1 storage location to only 1 MRP area but you can have multiple storage locations under single MRP area. It’s a N to 1 relationship.


 


MRP Areas for Subcontractors:


 


You can also define an MRP area for each subcontractor. Important point to note here is that a subcontractor can be assigned to only one MRP area in a plant. An MRP area of the subcontractor type can only contain one subcontractor. It’s a 1 to 1 relationship.


 


How to setup MRP area in SAP


There are 2 aspects of setting up MRP area. First one is to activate it in customizing and second part it to set up master data (i.e. adding materials to that particular MRP area in material master).


MRP with MRP area is not operational until you assign MRP area to a particular material in material master or in order words create a MRP area segment. 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.


Step 1 – Converting Planning file entries


Path: SPRO > Production > Material Requirement Planning > Master Data > MRP Areas > Convert Planning file entries for MRP areas – OM0F or SE38 program RMDBVM00


 


1.PNG


When we convert planning file entries for MRP area, system creates plant MRP area for each plant. Following entries from below tables are converted. Planning file entries are maintained in MRP file which are converted to MRP area file in below tables.


Planning file entries in MDVM are converted to DBVM


Planning file entries in MDVL are converted to DBVL


Planning file entries in KDVM are converted to KBVM


Planning file entries in KDVL are converted to KBVL


2.PNG


If you are running converting planning files for the first time then system will automatically create plant MRP areas. These new entries can be seen in OMIZ under plant MRP area with area type “01”.


IMP note: After the conversion, contents of MDVM/MDVL/ KDVM/KDVL are deleted and entries are created in DBVM/ DBVL/ KBVM/ KBVL.


Step 2 – Define MRP area in SPRO – OMIZ


 


Path: SPRO > Production > Material Requirement Planning > Master Data > MRP Areas > Define MRP areas


 


3.PNG


 


MRP area has 3 types (01, 02 & 03) and system will allow you to have MRP areas in below types only (Plant, Storage location or Sub Contractor)