Help Understanding the item category "R" in BOM's:

[Former Member]

Hi Experts,

I need help understanding the item category " R " in BOM's and its usage with any example for my understanding since i need to explain to my board. Can anyone help me with this?

[Former Member]

Thanks Folks, i have got a clear picture of R class from the above details shared, thanks for your help

[Former Member]

Variable Item size is used when the consumption could be in terms of sheets (rectangular or triangular etc) and you would like to maintain

1) Maintain the Alt UOM MM, M2 and ST (millimeters and MM Square) in Material master for this component.

2) Maintain item category as R for the component in the BOM

3) In the Item details, VS Item data tab maintain the size 1 and size 2 in MM e.g. size 1 = 100 mm and size 2 = 100 mm.

4) Maintain the number of sheets (e.g. 10) i.e 10 sheets = 100*100 mm of the component.

The qty var-sz itm is populated automatically based on the formula key. If you want the formula to be a different one since your client's way of calculating the area of sheet is different, please create your own.

Now on the consumption is posted in terms of area of the sheet (MM2) and not in base unit of measure.

If you need any further help, feel free to let me know.

Jagadish

[Former Member]

R is Variable-Size Item

If you want different-sized sections of a material (raw material) to be represented by one material number in BOM items, you use this item category.

On the Detail Screen: Variable-Size Item Data, the system automatically calculates the quantity of the variable-size item required from the sizes and any formulas entered.

On the Variable-Size Item Data screen, you maintain data that is specific to variable-size items.

If you enter variable-size item data, the system calculates the quantity. All calculations in BOMs are based on the international system of units.

This is the data you can maintain specifically for variable-size items:

Size (1 to 3)

These three fields contain the dimensions of the variable-size item. The system uses these dimensions as variables in the selected formula to calculate the variable-size item quantity.

Size unit

This field describes the unit for sizes 1 to 3.

If you do not enter a unit for variable-size item sizes 1 to 3, the system uses the default unit of measure that you defined when you configured your system.

The dimension of the size unit and the dimension of the unit of the variable-size item quantity are related (see the example below).

The following table contains the variable-size item data used to calculate the quantity for a sheet of metal.

size-1 - 200mm

size -2 - 300mm

If you do not enter a formula, the system calculates the quantity for the variable-size item according to the standard formula:

Size 1 * Size 2

The result has the dimension area:

200 MM * 300 MM = 60,000 MM2 (square millimeters)

Formula key

This key represents the algorithm for calculating the variable-size item quantity.

In Customizing for Production, you can define formulas by choosing Bill of Material ® Item Data ® Define formulas for variable-size items. You can also use the formulas defined in the standard R/3 System.

You can enter units of measure for calculating the variable-size item quantity with a formula. The calculation always uses unit for the dimension from the international system of units (for example, M3 for a volume in cubic meters). These units are defined in Customizing (dimensions for units of measurement).

Number

This entry is the number of pieces of the variable-size item required for the assembly. This entry is used for calculating raw material requirements.

The unit PC (piece) is defined as a default in the standard R/3 System, in Customizing for Production, under Bill of Material ® Control Data for Bills of Material ® Define modification parameters.

Variable-size item quantity

The system uses the sizes you enter and a variable-size item formula to calculate the quantity of the variable-size item.

If you do not enter a formula, the variable-size item quantity is either the product of sizes 1 and 2 (for dimension area) or the product of sizes 1, 2, and 3 (for dimension volume).

The variable-size item quantity is used for calculating raw material requirements:

Raw material requirement =

Number of variable-size items * Variable-size item quantity * Required quantity

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Base quantity

Component Unit of Measure for Variable-Size Item

This unit describes the unit of measure for the quantity of a variable-size item.

In the material master record, you can enter alternative units to the base unit of measure.

The only alternative unit used in BOMs is the unit of issue.

Possible values are:

Base unit of measure

Unit of issue

Units of measure that have the same dimension as the base unit of measure or the unit of issue

If you do not enter a unit, the system proposes a unit from the material master record, if the item has a material master record.

If a unit of issue is entered on the storage screen of the material master, the system copies this unit to the BOM. Otherwise, the system copies the base unit of measure to the BOM.

you can also see the data in the following link

http://help.sap.com/saphelp_47x200/helpdata/en/a0/1016bd4c8311d189520000e829fbbd/frameset.htm

[former_member184627]

Hi Raj,

Item category "R" is used for variable size items.

For Eg: The raw material (R1)is a aluminium plate of 1 sq.m. & we need to cut it into square pieces(H1) of 10sq.cm then we can use item category R for the BOM component.

Based on this the required size of raw material willbe calculated in accordance to the order qty of the header material (H1).

Regards,

Senthilkumar