by: Sankaran

1. WHAT IS THE MAIN DIFFERENCE BETWEEN DISCRETE, REPETITIVE AND PROCESS MANUFACTURING. GIVE SOME EXAMPLES.

PP-Discrete:  Required where there will be discrete orders passing through a work center, here the capacity planning plays major role. i.e. if you have a lath machine, many orders are going through this lathe m/c and schedule plays very important role w.r.t lath as well as the product as the product has to go through many work centre. Every time the product many not be same can be different, but same work center can be used for many products.

PP-PI: We are mainly concerned with quality parameters and Process management i.e control recipe is configured in this module. But the difference is the o/p is almost same, you will not change the product, but every step is very important to achieve the product quality. And it is entered by operator and approved by shift supervisor through control recipe function.

REM: Mainly to reduce the data input by person working in SAP and in this case we are bother by the period end costing and not the each order level costing as the process is repetitive and one order is sufficient for the wile life.
 

2. HOW YOU CAN DECIDE AN ORGANISATION IS DISCRETE OR REPETITIVE OR PROCESS INDUSTRY?

It depends on the client decision. In general it can be classified on the basis of product flow in the manufacturing process. If the production process under go same type of operation and process in their manufacturing, client can go for REM. If the production flow in their manufacturing process under go different operations depends on the requirement, client may go for Discrete. Also the production contains more and long operations can adopt discrete. REM contains similar less complicated operations. Even FERT can produced with Discrete and HALB can be produced by using REM.
 

3. FOR EXAMPLE CAR MANUFACTURING, WHAT TYPE OF INDUSTRY IS THIS, IF IT IS REPETITIVE, WHY NOT DISCRETE OR PROCESS INDUSTRY.

We can map the car manufacturing in REM or Discrete.
It is to be decided with the business process owners and consulting partner, how they want to map the system. 
Production persons will explain how and about the production process. Also, the opinion of Costing department is important.
Accordingly, it can come to a conclusion whether to go for Discrete or REM.
It is to be decided before implementation starts.

Read Also:
Control Regular Entry for Material Consumption

SAP PP Reference Books:
SAP Production Planning , Configuration, Interview Questions and Certification, Books

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