Close the gap between engineering and the floor

Items get missed, quantities change and revisions reach purchasing late. When BOMs move from engineering to production by hand, every plan built on them inherits the errors.

The BOM is right in engineering and wrong by the time it reaches the floor

Engineering designs the product and creates the BOM. Then it's exported, copied into a spreadsheet, adjusted by different teams and used for purchasing or production. Somewhere along the way, items get missed, quantities change, non-modeled items aren't captured, and a revision doesn't reach the people who needed it.

BOM problems rarely show up as "the BOM is wrong." They show up as wrong picks, rework, scrap, confusion over which revision is current, and "we built it this way last time" decisions.

Engineering wants controlled changes. Production wants clear instructions and parts that match what's on the floor. If changes don't flow through reliably, the change still happens, just informally.

A wrong BOM means a wrong plan

The BOM sits at the center of manufacturing planning. If it's wrong, the purchasing plan, the inventory plan and the production plan may be wrong too.

So the errors travel. Purchasing orders from an outdated BOM. Production builds from information that has changed. A superseded part number goes to a supplier who can't deliver it on time. Missing fasteners stop a line mid-shift. Operators work from a printed BOM that no longer matches the design in CAD.

By the time the error is visible, it's a reorder, scrapped parts, reworked product or a delayed job.

Engineering and production need different BOMs

Part of the gap is structural. The engineering BOM describes how the product is designed. Manufacturing needs to know how it will be purchased, assembled, staged and produced.

A BOM can be accurate from a design point of view and still incomplete from a manufacturing one. A manufacturing BOM may need non-modeled items, consumables, production materials, packaging, process-related items or grouped structures that make purchasing and assembly practical. When that conversion happens by hand, production teams end up interpreting design information themselves. EBOM vs MBOM explains the difference in more depth.

The product information exists. The handover is the problem.

Engineering-led manufacturers rarely lack product information. They struggle because it doesn't flow cleanly into operational decisions.

The pattern is familiar: BOMs exported from CAD or PDM, modified by hand, shared through spreadsheets, then used by purchasing or production without a controlled workflow. Each step is done by a capable person. The risk is in the gaps between them, where nobody can be sure purchasing and production are working from the same version.

If your BOMs are exported, reformatted or re-entered by hand on their way to purchasing, you're carrying this risk now.

Questions worth asking about your BOM handover

  1. Where does your BOM information come from today?
  2. How does engineering hand BOMs over to purchasing or production?
  3. Do you have issues with missing items, non-modeled components, revisions or manual BOM changes?
  4. How do you know purchasing and production are working from the correct version?
  5. What happens when engineering changes a BOM after purchasing or production has already started planning?

Rework caused by BOM or handover errors is one of the costs worth counting when you build a case for change. Building the business case shows how.

Where to go next

With MaXXlink

From design to production

Bills of materials

The foundation of every plan

EBOM vs MBOM

From how it's designed to how it's made

Engineering managers

BOMs that reach production intact

Departmental handovers

Information trapped between teams