ERP interface: why your ERP should share data.
An ERP interface is safe when it's well designed: the ERP stays the leading system for master data, other systems only read what they need. As long as your ERP gives no data out, the rest of the company works against it by hand. We first clarify which data flows in which direction, then build exactly that.
What is an ERP interface?
An ERP interface connects the ERP with other systems such as CRM, shop or accounting, so data flows automatically instead of via export and retyping.
Well designed means: for every type of data it's defined which system leads and in which direction data may flow. Not every system may read and write everything. That's exactly what makes the interface safe.
Master data team, manual exports and still errors.
At some point someone decided: nobody touches our ERP. Too important, too sensitive, too much risk. Since then a master data team enters new customers by hand, inside sales pulls exports and prepares them, sales keeps switching between CRM and ERP.
And still duplicates appear. People make mistakes, just like machines. Only the manual route lacks the logic that catches those mistakes.
Three situations when the ERP stays an island.
We know these situations from many companies.
Prospect becomes customer, the ERP doesn't know
Sales wins the deal in the CRM. Now someone has to create the customer in the ERP, check the address, assign a debtor number, set payment terms. Until that's done no invoice goes out, and that every single day.
Quotes are written in the wrong system
The CRM lacks current prices and product data because they sit in the ERP and no interface exists. So sales writes quotes in the ERP after all, juggles two systems and loses time. The CRM becomes a mere address book.
Revenue is missing in the CRM
Sales leadership wants to know what a customer bought last year. The number sits in the ERP, the CRM doesn't show it. So they call accounting or pull an export themselves. Decisions wait for data nobody can get at the push of a button.
Which data flows where.
| Data type | Leading system and direction |
|---|---|
| Customer master data and addresses | ERP leads, CRM reads |
| New customers after a won deal | CRM creates them automatically in the ERP |
| Sales contacts | CRM leads, no sync into the ERP |
| Products and prices | ERP leads, flow into the CRM for quotes |
| Revenue and open items | ERP leads, visible in the CRM |
The interface is rejected before it's designed.
The concern is understandable: if the CRM can change customer data, the wrong address may end up on the invoice. If external systems write into the ERP, you lose control over master data.
That's true if the interface is badly designed. But an ERP interface doesn't mean every system may do everything. It's about clear rules: addresses are changed in the ERP, not in the CRM. The CRM reads. Certain data such as new customers may be transferred automatically.
That's why we never sync everything with everything. Sales contacts are often different from those in the ERP, a full contact sync creates more problems than it solves. How such connections are built technically is covered under breaking up data silos.
Clarify first, then build.
The technology is usually the smaller part.
Everyone at one table
Sales, accounting, master data and IT agree on who owns which data.
Define data flows
Only the handovers that are really needed. No full synchronisation.
Build the interface
The technical implementation then often takes only a few days.
Test and hand over
Testing with real cases, then your team takes over.
Master data team relieved. Sales works in the CRM.
A B2B company has had CRM and ERP side by side for years, without a connection. A small master data team creates new customers in the ERP by hand as soon as sales wins a deal. Time passes before the first invoice.
Typically we first clarify which data flows are really needed. No full synchronisation, but targeted handovers at the right points. How sales then actually uses the CRM is covered under CRM in sales.
- New customers land in the ERP automatically when the deal closes
- Prices from the ERP, quotes directly in the CRM
- Revenue and open items visible in the CRM
- Master data team freed from retyping
- Invoice without waiting for customer creation
The risk was never the interface. The risk was the manual process.
What you usually ask us about ERP interfaces.
No, if the interface is designed properly. We define exactly which system leads for which data and in which direction data may flow. The ERP stays the leading system for master data. Other systems read what they need and only write where it has been clearly agreed beforehand.
No, that's usually even wrong. We only sync what's really needed, such as new customers, prices, products and revenue. Every unnecessary data flow creates complexity and new sources of error. Sales contacts, for example, stay in the CRM because they are often different from the contacts in the ERP.
A fair concern and a common argument against CRM-ERP interfaces. The answer isn't no interface, but one with clear rules: addresses are changed in the ERP, not in the CRM. The CRM reads the address but doesn't write it back. That way the invoice always shows the address from the ERP.
We agree on the basic logic together in a few hours. The technical implementation then often takes only a few days. The bigger part is usually what comes before: getting everyone involved on the same page, so everyone understands why the interface makes sense and how it works. That sounds small but is often decisive.
Your ERP sits at the centre. But it talks to nobody.
Briefly describe which systems you have and what happens manually today. We'll tell you in a conversation what's possible.