EXPLAINER · 7 MIN READ
ERP integration for manufacturers: what it involves and where to start
By the Seamwire team · Updated
THE SHORT ANSWER
ERP integration for a manufacturer means connecting the ERP to the shop floor, sales, the warehouse and accounting, so production counts, stock and orders update in one place as they happen. Start with one high-value flow, usually line output into stock, decide which system owns each piece of data, and build the connection with retries, logs and alerts before adding the next flow.
Why manufacturers integrate their ERP
Most mid-size plants bought their ERP for finance. Production, quality and dispatch grew around it in spreadsheets and clipboards. The result is familiar: sales promise dates from yesterday's stock, a stopped machine is invisible until the shift report, and the same work order is typed three times.
The flows to connect, in a sensible order
- Production output into stock: counts from the line land in the ERP as parts are made.
- Sales orders into work orders: a confirmed order becomes a planned job without retyping.
- Stock and dispatch: what leaves the building updates stock and triggers the invoice.
- Purchasing: low stock raises a purchase request with the supplier and quantity filled in.
- Quality: inspection results attach to the batch and can hold it automatically.
Getting shop-floor data into the ERP
Machine data can come straight from controllers (OPC UA, Modbus or PLC exports), from a scanner at a gate, or from a simple tablet at the line where machines are older. The right choice differs per machine; the aim is that nobody types a count the system could have read.
Common systems
Manufacturers in the 50–500-person range commonly run SAP Business One, Microsoft Dynamics 365 Business Central, Odoo, Epicor, Infor or Tally, alongside Excel planning boards and sometimes an MES. Most have APIs or supported integration routes; heavily customised installations need their real behaviour mapped first.
Pitfalls to avoid
- No single owner per data item: if two systems can both change stock, they will disagree.
- Silent failures: every sync needs retries, a log and an alert to a named person.
- Big-bang projects: connect one flow, prove it, then add the next.
- Replacing the ERP first: usually unnecessary, and it delays the value by a year.
Where to start
Pick the flow where a wrong number costs the most, typically line output into stock, so what sales promise matches what the floor can make. Prove it on one line, measure the hours between a part being made and the ERP knowing about it, then extend.