Enterprise Administration > Implementing Windchill ESI > Implementing Windchill ESI in an SAP Environment > XML Schemas > Common Business Object (CBO) > Common Business Object Schema: Object Header > BOM Schema
  
BOM Schema
The following describes the elements contained in the BOM schema.
Element
Description
Object Header
The system information for the current object. For more information, see Common Business Object Schema: Object Header.
WCID
Unique identifier for the BOM; internal to Windchill PDMLink.
AssemblyPartNumber
Part number for the BOM header.
Effectivity
Values used to determine planning. Contains the following subelements:
StartDate: Date when the BOM becomes effective within the organization.
EndDate : Date when the BOM effectivity ends.
Version
Current version number of document being published.
ChangeNumber
Value for the enterprise change notice (CN) for creating, deleting, or updating the BOM.
Usage
The value is mapped using the cross referencing of BOMHeader/Usage value of ESIResponse. If the cross referenced values is blank then the value of BOMHeader/Usage in ESI Response is mapped.
Alternate
The value is mapped using cross the referencing of BOMHeader/Alternate value of ESIResponse. This value is cross referenced from ESILookups.properties. If the cross referenced values is blank then the value of BOMHeader/Alternate in ESI Response is mapped.
Children
Structure containing ChildLinks which detail the children of the BOM.
Substitutes
Structure containing SubstituteLinks which detail the substitutes of the BOM.
ReferenceDesignators
Structure containing ReferenceLinks.
BOMUserArea
Optional. Stores all user-defined data used for customization.