Material Costing with Quantity Strecture

The results of a material cost estimate with quantity structure do not differ from one without a quantity structure; they are identical from a costing point of view. Ÿ Cost component split.
This means that the valuation principles outlined in earlier units also apply here. It is only the method by which the costing results are obtained that is different. Material costing with quantity structure can determine the product structure and production plans as entered in Logistics, and convert them into the structures of the itemization and cost component split. n This explains the emphasis on describing the logistical data.In addition, Activity-Based Costing is briefly covered. Finally, this unit describes the price update process after the execution of a standard cost estimate.

The bill of material (BOM) is a directory for an object and its constituent parts, containing information such as the name, reference number, quantity and unit of measure. BOMs are used:
in Material Requirements Planning for procuring parts.
Ÿin Production for staging parts.
Ÿin costing for calculating material costs.

BOM header

The BOM header contains information that applies to all items in the BOM.The BOM status must be active for costing to enable the BOM to be read for a cost estimate.The above slide lists the fields in the BOM header that are relevant to costing.BOM usage: Examples for BOM usage: BOMs used exclusively for engineering or costing purposes.

BOM status : If complex changes are made to a BOM, you can use the BOM status to control when
the BOM is used, such as for a cost estimate.
Area of validity: A BOM can be defined as valid for only a limited range of lot sizes, such as 1 to
1,000 units. You can then create a different BOM for lot sizes exceeding 1,000 units. Therefore, only
one BOM can be used for the defined costing lot size.
Alternative BOM: Alternative BOMs can describe different product structures that create a product
with the same properties. For example, one alternative uses sheet metal A, while the other alternative
uses sheet metal B.



BOM Item

Item category:
ŸL = stock item, valuation in accordance with material valuation strategy or separate cost estimate
ŸN = non-stock item (see next slide)
ŸR = variable -size item, valuation in accordance with material valuation strategy or separate cost estimate

Fixed quantity indicator: This indicates whether the quantity entered is dependent on the lot size. It applies mainly to unavoidable material loss at the start of the production process.Planned scrap: This topic is covered in detail in the appendix under Scrap. Relevancy to costing indicator: If this indicator is not selected, the system ignores the BOM item in the material cost estimate. For standard cost estimates, modified standard cost estimates, and current cost estimates, the only decision to be made is whether or not the item will be costed ("X" or " "). For inventory costing, a relevancy to costing indicator can be entered here that has a devaluation factor in Customizing. This enables you to devaluate BOM items (such as packaging materials) on a flat-rate basis for inventory or commercial purposes.

The settings in the BOM usage and BOM item categories allow you to specify whether this field contains a default value and whether this value can be changed when the BOM is maintained. n Bulk material: Bulk material is usually posted as consumption at production cost centers as soon as it is procured, so it is not included in the cost estimate.

BOM Non Stock material

Nonstock materials are materials that are not kept in inventory. They are always procured externally and assigned directly to the order. Nonstock materials have either no material master, or are maintained with a nonstock material type for the entry tool.For nonstock materials without a material master, data that is relevant to costing (such as prices) is entered directly in the BOM item (purchasing data). Ÿ For nonstock materials with a material master, no prices can be maintained and the materials are valuated in accordance with the strategy specified in the costing variant. The price shown in the BOM does not have to be the same as the price in the cost estimate selected in accordance with the valuation strategy.

Routing

Production costs are determined through the routing, the work centers at which the operations are performed, the cost centers and the relevant activity types.A routing consists of one or more operations. Each operation contains information on the work center, production resources and tools, material assignments, operation texts, and standard values (how long, how much).For repetitive manufacturing and process manufacturing, rate routings and recipes can be used.

Work center

Work centers are used in plans (routings, networks, inspection plans, maintenance task lists, and rough-cut planning profiles).Machine group and capacity planner group are synonyms for work center. Work centers are defined with reference to a plant. Work centers are assigned to cost centers.

The standard value key enables you to define the six standard values in the operation. The system assigns a parameter key to the standard values of the operation and of the work in the network activity. This parameter key specifies the following:
Keyword appearing with the standard value on the screen, such as setup, machine, personnel,
teardown, and so on.
ŸDimension (time, quantity, volume, and so on) in which the standard values must be maintained. Ÿ At the same time, the parameter key represents the names of the formula parameters. You can use the formula parameters to represent the standard values in a formula, so as to determine the following: execution time, capacity requirements, costs.

The control key specifies the business functions you want to execute with an operation:
Scheduling.
ŸCapacity planning.
ŸCosting: This ensures that the operation is included in costing.
ŸConfirmation: Here you specify whether and how the operation is confirmed.
ŸExternal processing: Here you specify whether the operation is processed internally or externally, or whether both options are possible.

Routing header

Material - plan assignment: A routing can contain multiple materials that are involved in the same production process.You utilize a task list usage to assign the routings to various work areas. In this way, you can create several routings to produce one plant material. These routings are differentiated in your task list usage. Routing status : You use this status to indicate the processing stage of a plan. For example, you could indicate whether the plan is still at the creation stage, or whether you have already released it.

Operations

Relevancy to costing:

ŸIf the control key specifies that the operation is not relevant to costing, the relevancy to costing indicator is ignored in the operation. If the control key specifies that the operation is relevant to costing, you can override this with the relevancy to costing indicator in the operation.Assigment of activity types/business process: 
If the reference indicator is turned off in the work center, you can overwrite the standard values of the work center in the routing. Linking the standard times with the activitiy types is carried out via the formulas in the work center.

Production costs are created by combining data from Production Planning with Cost Center Accounting/Activity-Based Costing.The routing describes the quantity of an activity and the location of the operations. The work center describes where an operation is performed.It is linked to a cost center to valuate the activities. The planned activity prices for the work center are calculated through the link to a cost center and the activity type planning for the cost center.

Formula

The standard value key enables you to define the six standard values in the operation. The system assigns a parameter key to the standard values of the operation and of the work in the network activity. This parameter key specifies the following: 

Keyword appearing with the standard value on the screen (such as setup, machine, personnel, teardown, and so on) Ÿ Dimension (time, quantity, volume, and so on) in which the standard values must be maintained Ÿ At the same time, the parameter key represents the names of the formula parameters. You can use the formula paramete rs to represent the standard values in a formula, so as to determine the following: Execution time, capacity requirements, costs

Formula: You can use formula parameters to which you have assigned values. You can then link these parameters with mathematical operations such as addition, subtraction, multiplication, or division.

Costing result

The system calculates the costs by multiplying the quantity by the price. The quantity comes from the standard values for the operation and is modified by the performance efficiency rate and a formula.In the itemization for the cost estimate, an internal activity for the cost center/activity type is displayed. Furthermore, the assignment to the operation and work center is saved in the itemization.



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