Flattened BOM

Flattened BOM (also called the summarized or roll-up BOM) collapses every level of a multilevel structure into one consolidated list of leaf-level parts with summed quantities. It hides the hierarchy and reports the total quantity of each unique part required to build the parent product.

What it covers

• Roll-up of quantities across all levels of the indented BOM.
• Procurement and cost views — what to buy and how much, ignoring assembly structure.
• Rare-earth, conflict-mineral, and substance-of-concern reports — easier to audit when flattened.
• Kit pulls and material planning for build-to-stock products.
• Counterpart to multilevel and single-level views.

Relationships (see sidebar)

• Part of the MBOM/EBOM BOM family.
• Supports BOM Management and Supplier Development.
• Implemented by Siemens Teamcenter, PTC Windchill, Aras Innovator, and Oracle Agile.