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As well as the general parameters described above, you must also determine the MRP procedure in the material master record according to which the material is to be planned. You do this by specifying the so-called MRP type.

MRP types and meaning:

VB Manual reorder point planning:

with manual calculation of the reorder level and safety stock

VM Automatic reorder point planning procedure: with automatic calculation of the reorder level and safety stock

with forecast for planning total stock

VR Time-phased planning

R2 Time-phased planning:

with automatic calculation of reorder level

PD MRP without BOM explosion

After you have specified the MRP procedure, you enter the parameters dependent on the planning procedure that you selected. An overview of these parameters is provided in the following table.

Parameters Dependent on the MRP Type For... You must maintainYou can maintain

VB reorder level safety stock

VM reorder level safety stock

VV safety stock

reorder level,

but does not make sense VR planning cycle safety stock

reorder level R2 planning cycle safety stock

reorder level

PD safety stock

reorder level,

but does not make sense

Planning cycle

Key that determines on which days the material is to be planned and ordered. If a vendor always delivers a material on a certain days of the week, it makes sense to carry out the planning run according to the same cycle, but displaced by the delivery time. The planning cycle is entered as a planning calendar in the system. It is required for time-

phased planning.

Safety stock

The safety stock is used to prevent material shortfalls during the stocking-up period which may occur if consumption is unexpectedly high or if delivery dates are not kept. You have the choice between manually determining the safety stock or letting the system automatically determine it for you when carrying out the forecast. Safety stock forms a part of the reorder level and is not included in requirements planning.

Service level

If the safety stock level is to be calculated by the system then you must specify a service level. This level indicates the percentage of existing requirements which is to be covered by warehouse stock. The higher you specify the service level, the higher the system will

calculate the safety stock level in order to compensate for additional consumption or delays in delivery.

Reorder level

The reorder level is only relevant for reorder point planning. In automatic reorder point planning, the system calculates the reorder level during forecasting. If a material master record is recreated, the reorder level must always be entered manually even if it is overwritten again by the system as is the case in automatic reorder point planning. It is thus possible to plan a material even if no forecast has yet been carried out for it. If you enter a reorder level for time-phased planning, the system uses a mixture of the two planning procedures, reorder point planning and time-phased planning: materials that are planned using time-phased planning are not only included in the planning run on the MRP date, but they are also replanned if material stock falls below the reorder level due to a goods issue. The following fields are only significant if the forecast must be carried out because of the MRP type which was chosen. For example, this is the case for automatic reorder point planning, for forecast-based planning, and for time-phased planning.

Period indicator

The period indicator specifies the time period for which the system is to store historical or forecast values. You can define the period indicator when maintaining the MRP parameters as well as when you are maintaining the forecast parameters.

Fiscal year variant

You must enter the fiscal year variant if you want to create a flexible period length equal

to the accounting period for the material.

Splitting indicator

If you specify a splitting indicator, the system will only take a certain number of periods into account for requirements planning and it will also split them into smaller time periods (as long as the period indicator is not set to daily quantities). The splitting indicator is irrelevant for reorder point planning. 14.2.3. Parameters for Scheduling

In scheduling, the system determines the basic dates for all the order proposals that it created during material requirements planning. To be able to plan these order proposals exactly, the following parameters are important when you are maintaining the material master record:

Scheduling margin key

dates and for carrying out lead time scheduling for the planned order - for materials that are produced in-house. The float is the opening period for determining basic dates and the float before production and the float after production for lead time scheduling. You maintain the floats in Customizing and they are calculated in workdays.

Planned delivery time

The planned delivery time determines the time required to obtain a material by means of external procurement. You must only enter the planned delivery time if the material is externally procured.

In-house production time

The in-house production time determines the length of time required to produce an assembly or a finished product. The in-house production time is independent of the order quantity. You must only enter this indicator if the material in question is to be produced in-house.

Goods receipt processing time

The goods receipt processing time specifies the time required to inspect the material and to transfer it to stock. It represents the time span (in workdays) between the receipt of the goods and the inward stock movement. The system also takes goods receipt processing time into account during scheduling.