Explain BOM relevant in SD?

We need to maintain Material master records for the BOM Item and for the components also.
 
The item category group of the BOM items is ‘ERLA/LUMF’ and the item category is ‘NORM’.
 
Creating BOM item:
 
Logistics
Sales and distribution
Master data
Products
Bills of material
Bill of material
Material BOM
CS01 create
 
Specify the data for the following fields.
 
Material: Specify the material for which components are to be maintained.
 
Plant: Specify the plant of BOM item.
BOM usage: Specify the application in which BOM is maintained (5 for SD).
 
Alternative BOM: Specifies the sequence of a BOM within a group of BOMs.
(L = stock item                  N = Non-stock item)
 
In the overview screen specify the components which makes the main item and the corresponding quantities and save it.
Note: During sales document processing if we enter the BOM item the system automatically determines corresponding components.
 
I. For the BOM to be exploded in the sales document the following customizing setting is required.
 
A) If the item category group is ERLA the item category of the BOM is TAQ, in the definition of which we have to specify the value A (Explode single level BOM) in the structure scope.
B) If the item category group is LUMF the item category of the BOM item is TAP in the definition of which we have to specify the value A in the field structure scope.
 
II. If the item category group is LUMF the system shows price for the components but not for the BOM item. For this the following customizing setting is required.
 
A) The item category of the BOM item is TAP which is not relevant for pricing, so the BOM item is not Priced.
B) The item category of the components is TAN which is relevant for pricing, so the components are priced.
 
III. If the item category group is ERLA the system shows price for the BOM item but not for components. For this following customizing setting is required.
 
A) The item category of BOM item is TAQ, which is relevant for pricing, so the BOM is priced.
B) The item category of components is TAE which is not relevant for pricing, so the components are not priced.
 
While creating sales document to get the list of alternative BOMs in the definition item category of BOM item we have to check the field “Manual Alternative”
 
ITEM CATEGORY DETERMINATION FOR BOM ITEM
 
SD type  ITCaGr  Usg   HLItCa DftItCa
 
  OR       ERLA    TAQ
  OR       NORM  TAQ  TAE
  OR       LUMF   TAP
  OR       NORM  TAP  TAN
  OR       NORM  TAN
  OR       NORM  TAE  TAE
  OR       NORM  TAN  TAE
 
NOTE:  A – Explode single level BOM item
B – Explode multi level BOM item
CS01 – Transaction code for creating BOM Item
 
Statistical value ‘x’ or ‘y’
Make TAP relevant for pricing but values for statistical only.

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