Model Bills of Material
An ATO model can have another ATO model as its component. The decision as to whether or not to create a config item for a lower level model is determined by the BOM supply type on the lower level model in the item validation organization.
If the supply type is set to phantom, no configuration item will be created during autocreate config, and the model and all it’s components will become part of the top level configuration BOM.
If the supply type is set to anything other than phantom, auto create config will create a configuration item for that model and only the config item will appear on the parent configuration BOM.
Note: ATO models exist in organizations that are not part of any sourcing chain for the model if the organization is:
■ The OM validation organization, but never used to manufacture, stock, ship or transact the model
■ The PO validation organization, but never used to manufacture, stock, ship or transact the model
■ The Purchasing organization for global procurement, but never used to manufacture, stock, ship or physically transact the
model
■ Part of an enhanced intercompany transaction flow, but never used to manufacture, stock, ship or physically transact the
model If the model attribute “Create config item, BOM” attribute is set to Based on Model, or item based on model, BOM based on sourcing, The configuration item will also be created in these organizations.

Set the following attributes on the model item to prevent the configurations from being accidentally transacted or planned in these organizations: ATP, ATP Components = none Planning Method = Not Planned Model Items, Bills, and Routing
A PTO model can have another PTO model or an ATO model as its components.