Important tables in MM and PP

Question

Hi,
  Hi could any one tell me the MM and PP flow,important tables ,fields,and the linkage between them.
Regards,
Charumathi.B

Answer 1

Hi Charumathi,
Here is the MM Flow,
A.)MM Process Flow
The typical procurement cycle for a service or material consists of the following phases:
1. Determination of Requirements
Materials requirements are identified either in the user departments or via materials planning and control. (This can cover both MRP proper and the demand-based approach to inventory control. The regular checking of stock levels of materials defined by master records, use of the order-point method, and forecasting on the basis of past usage are important aspects of the latter.) You can enter purchase requisitions yourself, or they can be generated automatically by the materials planning and control system.
2. Source Determination
The Purchasing component helps you identify potential sources of supply based on past orders and existing longer-term purchase agreements. This speeds the process of creating requests for quotation (RFQs), which can be sent to vendors electronically via SAP EDI, if desired.
3. Vendor Selection and Comparison of Quotations
The system is capable of simulating pricing scenarios, allowing you to compare a number of different quotations. Rejection letters can be sent automatically.
4. Purchase Order Processing
The Purchasing system adopts information from the requisition and the quotation to help you create a purchase order. As with purchase requisitions, you can generate Pos yourself or have the system generate them automatically. Vendor scheduling agreements and contracts (in the SAP System, types of longer-term purchase agreement) are also supported.
5. Purchase Order Follow-Up
The system checks the reminder periods you have specified and - if necessary - automatically prints reminders or expediters at the predefined intervals. It also provides you with an up-to-date status of all purchase requisitions, quotations, and purchase orders.
6. Goods Receiving and Inventory Management
Goods Receiving personnel can confirm the receipt of goods simply by entering the Po number. By specifying permissible tolerances, buyers can limit over- and under deliveries of ordered goods.
7. Invoice Verification
The system supports the checking and matching of invoices. The accounts payable clerk is notified of quantity and price variances because the system has access to PO and goods receipt data. This speeds the process of auditing and clearing invoices for payment
MM flow is processing between business organisation and Vendor:
1...Purchase Requisition --- T.code ---ME51
2...Source List -
T.code-----ME41
3...Request for Quation (RFQ)-T.codeME21N (To Vendor)
4...Purchase Order -
T.code -
ME21N (To Vendor)
5...Goods Receipt-------T.code....MIGO
(Tables: MKPF, MSEG)
6...Invoice Verification----T.code...MIRO
(Tables: BKPF , BSEG)
7...Vendor Payment----T.code...FB60 (FI - Account Payable)
B.) And the Important tables in MM module as as follows
EINA Purchasing Info Record- General Data
EINE Purchasing Info Record- Purchasing Organization Data
MAKT Material Descriptions
MARA General Material Data
MARC Plant Data for Material
MARD Storage Location Data for Material
MAST Material to BOM Link
MBEW Material Valuation
MKPF Header- Material Document
MSEG Document Segment- Material
MVER Material Consumption
MVKE Sales Data for materials
RKPF Document Header- Reservation
T023 Mat. groups
T024 Purchasing Groups
T156 Movement Type
T157H Help Texts for Movement Types
MOFF Lists what views have not been created
A501 Plant/Material
EBAN Purchase Requisition
EBKN Purchase Requisition Account Assignment
EKAB Release Documentation
EKBE History per Purchasing Document
EKET Scheduling Agreement Schedule Lines
EKKN Account Assignment in Purchasing Document
EKKO Purchasing Document Header
EKPO Purchasing Document Item
IKPF Header- Physical Inventory Document
ISEG Physical Inventory Document Items
LFA1 Vendor Master (General section)
LFB1 Vendor Master (Company Code)
NRIV Number range intervals
RESB Reservation/dependent requirements
T161T Texts for Purchasing Document Types
C.) and about the fields it depends on transactions
D.) PP Process Flow
The PP flow consists of planning and execution as described. 
Here is the flow of PP in simple language:
First of all demand is generated for the product to be produced through demand management. It calculated the quantities to produce and the time for the final assembly. 
The data from demand management is transferred to MRP.   The data from demand mgt can come from Customer Sales Order (firm) or Planned Order (forecast).
The MRP checks for the availability of material at various stages of BOM. In case material is not available MRP generated planned order and Purchase requisition for production of components in house and procurement from vendor respectively.   
The planned orders are converted into production order by the planner and the purchase requisition are converted into purchase order by the purchaser.
Production in charge converts the planned order to production order and carries out the production activities once the order is released for production. Production is carried out as per the operation steps provided in the routing. Work centers are also mentioned with each operation in the routings where these operations are to be carried out. 
Once the production is completed production confirmation is done and goods movement (delivery created) takes place. 
Capacity planning is yet another part of PP which planes the capacities for various work centers. MPS is another tool which is used to plan out the master products. If MPS is to be run the inputs are provided from demand management to MPS. And the out put from MPS is then feed into MRP.
E.) PP Module important Tables
Demand Management
PBED          Independent Requirements Data
PBIM          Independent Requirements by Material
Repetitive Manufacturing
SAFK         RS Header Master Data
S025           LIS -- Run Schedule Quantities
S026           LIS -- Material Usage
S028           LIS -- Reporting Point Statistics
CEZP          Reporting Point Document Logs
CPZP          Reporting Points - Periodic Totals
MRP Records
MDKP        MRP Document Header Data
MDTB         MRP Table Structure (no data)
PLSC          Planning Scenario (Long-term Planning)
MDFD        MRP Firming Dates
MDVM       Planning File Entries
S094           LIS -- Stock/Requirements Analysis
Reservations
RESB          Reservations/Dependent Requirements
Planned Orders
PLAF          Planned Orders
Discrete Production
AFKO         Order Header
AFPO          Order Item Detail
AFVC          Order Operations Detail
AFFL           Order Sequence Details
AFFH          Order PRT Assignment
AFBP          Order Batch Print Requests
AFRU          Order Completion Confirmations
AFFW         Confirmations -- Goods Movements with Errors
AFRC          Confirmations -- Incorrect Cost Calculations
AFRD          Confirmations -- Defaults for Collective Confirmation
AFRH          Confirmations -- Header Info for Confirmation Pool
AFRV          Confirmation Pool
AFWI          Confirmations -- Subsequently Posted Goods Movements
Classification
KLAH          Class Detail
CABN          Characteristic Detail
AUSP          Characteristic Values
CAWN          Characteristic Values
CAWNT         Characteristic Value Texts
KSML          Characteristic Allocation to Class
KSSK          Material Allocation to Class
Regards,
Suresh.S