The cost of disconnected CAD
In many factories the engineering department and the ERP live in separate worlds. Designers create parts and assemblies in AutoCAD, Inventor, SolidWorks, Creo or CATIA. Someone then prints or exports a BOM, cleans it up in Excel and types it into SAP, Odoo, Dynamics or Tally. When the design changes, the whole process repeats, and sometimes it doesn't, which is when the wrong parts get purchased or machined.
Integration removes this manual step so that engineering data flows directly and consistently into purchasing, planning and production.
What data should flow?
- Item master: part numbers, descriptions, materials, units, weights, make/buy flags.
- Bill of materials: parent-child structure and quantities.
- Revisions and status: which version is released for production.
- Documents: drawings (PDF), DXF for cutting, STEP for suppliers.
- Back from ERP: existing part numbers, stock, cost and preferred suppliers to help designers reuse parts.
EBOM vs MBOM
The engineering BOM (EBOM) reflects how the product is designed. The manufacturing BOM (MBOM) reflects how it is built: phantom assemblies removed, raw materials added (for example, sheet stock instead of a flat pattern part), consumables and packaging included. A good integration either transforms EBOM to MBOM with clear rules, or gives planners a tool to do it quickly.
Integration approaches
| Approach | How it works | Good for |
|---|---|---|
| Structured file export | CAD plugin exports a clean BOM (CSV / XML / Excel) in the ERP's import format | Quick win, small teams, limited IT access |
| Direct API integration | CAD plugin or PDM calls ERP APIs to create items and BOMs | Real-time sync, fewer manual steps |
| PDM / PLM-driven | Vault, SolidWorks PDM, Windchill or 3DEXPERIENCE pushes data to ERP on release | Companies with formal release workflows |
| Middleware | An integration service maps and routes data between systems | Multiple CAD systems or plants, complex rules |
Common pitfalls
- Inconsistent CAD properties. If part numbers and descriptions are typed freely, integration will expose the mess. Clean up properties and templates first.
- No clear part numbering rules. Decide who creates part numbers: CAD, PDM or ERP.
- Ignoring revisions. Only released data should reach production.
- Trying to do everything at once. Start with one product line.
- Forgetting the users. Designers need simple tools; planners need visibility of changes.
The best CAD-ERP projects start small: one product family, one clean BOM export, measured time savings. Then expand.
Quick wins you can get in weeks
- A one-click BOM export from your CAD tool in the exact ERP import format.
- A property editor that forces valid materials, units and descriptions.
- Automatic PDF and DXF generation on release, named by part number and revision.
- A "find existing part" lookup from inside CAD to reduce duplicate parts.
Beyond ERP: configurators and AI
Once CAD and ERP are connected, powerful options open up: web configurators that generate models, drawings and prices automatically, and AI agents that can answer questions like "Which assemblies use this bearing?" by querying both systems through MCP servers.
Talk to an integration specialist
ENGIMANDI integrates AutoCAD, Inventor, Revit, SolidWorks, Creo and CATIA with SAP, Oracle, Microsoft Dynamics, Odoo, Tally and custom ERPs. See our CAD integration & automation service or call +91-9677261485.