1. What are Traffic Lights in MRP? 

red = the stock is not available 

yellow - the stock is in average level stock 

green = the stock is available 

2. What is MRP List and what is the use of it? 

Definition of the MRP List
The system creates MRP lists during the planning run according to how you set the creation indicator. These lists contain the planning result for the material. The MRP list always displays the stock/requirements situation at the time of the last planning run and it also provides a work basis for the MRP controller. Changes that are made after the planning date are not taken into consideration, so the list is static. 
MRP lists are stored in the system until they are either deleted manually or replaced by new lists from a subsequent planning run. 

3. What is the use of Stock Requirement List? 

In the stock/requirements list, the most up-to-date stock and requirements situation is displayed. 
The main difference between the MRP list and the stock/requirements list is that each time the stock/requirements list is called up, the system selects the various MRP elements and displays the most up-to-date situation. You thus always see the current availability situation of the material in the stock/requirements list. Changes that are made after the planning date are displayed directly, so the list is therefore dynamic.
Stock/requirements lists are not saved in a fixed state in the system, but are subject to change and only exist in the working memory. 
Comparison
The screen layout of both lists is basically the same. 
The system automatically runs the rescheduling check directly when both lists are created and puts forward rescheduling proposals. 
The number of exception messages displayed in each list is roughly the same. The only difference lies in the fact that, due to the nature of the list, no exception messages can occur for newly planned MRP elements in the stock/requirements list. 
Directly after the planning run, both lists contain the same information. As soon as a change relevant to MRP is made, the system updates the information in the stock/requirements list. 
As stock/requirements lists are subject to change, they cannot be set with a processing indicator.

4. What is MRP controller Means? 

The MRP controller is a person or a group of persons responsible for monitoring material availability. You can use the number entered here, for example, to select the planning results per MRP conroller.
Every material that is relevant to the planning run must be assigned an MRP controller number in the material master record.
You can also determine a special person for backorder processing who receives a mail if a goods receipt was posted for a missing part. You must enter the mail name of this person in the field entitled, recipient name.
In addition, you can define a person or a group of persons, who are to informed if you send a mail from the MRP list or stock/requirements list to the MRP controller for the material displayed.
Actions

5. What is MRP group and what is the use of it? 

MRP Groups
In this step, you can carry out the total maintenance of the MRP groups and you can allocate a material type to an MRP group.
The MRP group is an organizational object that can be used to allocate special control parameters for planning to a group of materials. You can maintain MRP groups if planning control per plant is not precise enough for your requirements and you want to allocate certain material groups different control parameters from the plant parameters. For this purpose, MRP groups are defined with these specific control parameters and are assigned to the material in the material master record (MRP 1 screen).
For example, the following control parameters can be set for the total planning run:
the creation indicator for the plarequisitions, MRP lists, and so on) 
the planning horizon
the consumption mode
The following is valid for total planning and single-item planning:
for all materials without an MRP group, the system uses the plant parameters, or the entries in the initial screen of the planning run
for all materials with an MRP group, the system uses the parameters recorded in the MRP groupnning run (creation of purchase 

6. What is Purpose of Schedule Margin Key? 

In this step, you specify the floats for determining the basic dates of the planned orders. The floats are allocated to the material via the release period key in the material master record.
Opening period
The opening period represents the number of workdays that are subtracted from the order start date in order to determine the order creation date. This time is used by the MRP controller as a float for converting planned orders into purchase requisitions or into production orders.
Float before production
The float before production represents the number of workdays that are planned as a float between the order start date (planned start date) and the production start date (target start date).
On the one hand, this float is intended to guarantee that delays in staging a material do not delay the production start. On the other hand, the production dates can be brought forward by means of the float to cope with capacity bottlenecks.
Float after production
The float after production should provide a float for the production process to cope with any disruptions so that there is no danger that the planned finish date will be exceeded. You plan the float after production between order finish date (planned finish date) and scheduled end (target finish date).
Release period
The release period represents the number of workdays that are subtracted from the order start date in order to determine the production order release. The release period is only relevant for production order management.

7. What is opening period? 

Opening period
The opening period represents the number of workdays that are subtracted from the order start date in order to determine the order creation date. This time is used by the MRP controller as a float for converting planned orders into purchase requisitions or into production orders.

8. What is SLA ? Service Level Agreements 

Service Level Agreements (SLA) define the attributes for service products (for example, maintenance, Hotline) that have been agreed upon with the customer in service contracts. The SLA confirms different parameters, such as response time, availability time and system availability.

9. What are Basic Dates? 

Earliest date for the execution of the production order. This date takes into account the float before production.
If, on order creation, a planned order exists for the production order or process order, then the order dates are taken from the planned order. When scheduling the production order the system tries to adhere to the order dates (if necessary, with reduction measures).
If it is not possible to adhere to the basic dates and if the control parameter in Customizing allows the basic dates to be adjusted, the system adjusts the basic dates of the order during the scheduling run.
If the control parameter in Customizing does not allow the basic dates to be adjusted, the order keeps the basic dates of the planned order.
If the production order is created manually, you must enter at least one order date manually.
The scheduling type determines, which order dates you must enter.

10. What is planning time fence? 

The planning time fence specifies a period within which no automatic changes are to be made to the master plan.
The planning time fence is maintained in workdays.

11. What is Planning Horizon? 

In this step, you define the planning horizon. This planning horizon specifies the period for the "Net change planning in the planning horizon".
In this kind of net change planning, only those materials that have undergone a change that is relevant to MRP within the planning horizon are included in the planning run. Such materials receive a net change planning indicator in the planning file.
You make this specification for a plant. You can define an alternative planning horizon for MRP groups

12. What is Group BOM? 

Alphanumeric character string used to uniquely identify a BOM.
Use
If you assign a "meaningful" number to a BOM group, this gives you an additional way of accessing the BOM.
The system stores the following under a BOM group:
all the alternatives in a multiple BOM
all the BOMs entered for a variant BOM

13. What is costing? How it is affected the PP? 

Determining the material costs of a product.
When you calculate production costs using a quantity structure, the system automatically determines the BOM and all the BOM items that are relevant to costing, in order to calculate manufacturing costs. 

14. What is Meaning of Customized Reports? 

The report which is not using SAP standard reports.

15. In Project the Customization is comes under Which Phase? 

Realization.

16. How you get the Ticket? 

After release order,the reservation will provide the ticke to pick production material.

17. What are GAPS? Some Examples? 

The GAPS are some issue in blue print that SAP cannot capture or prividing the client bussiness process.

18. What is LSMW? 

The LSM Workbench is an SAP System tool that supports you when copying data from non-SAP.
systems. 

19. After Doing Realization How we will check whether it is working or not? 

Doing Final preparation to check using the test case from user.

20. What do we do in Realization Phase? 

Provide ARICEF, Configuration Documents, integration test, BPP, UAT, Unit Test and implements some SAP notes. 

21. How to Move to the Realization Phase? 

You must have some blueprints to go in next phase.

22. In LSMW which is most important Step? 

Maintain Object Attributes
Maintain Source Structures
Maintain Source Fields
Maintain Structure Relations
Maintain Field Mapping and Conversion Rules
Maintain Fixed Values, Translations, User-Defined Routines.

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