SAP ECC support ends in 2027: does it affect SAP Business One users?

We run our factory at Jagannath Polymers on SAP Business One. So the 2027 countdown in every SAP headline is a question I have a direct stake in.

Here it is. The 2027 date belongs to SAP ECC, the ERP that large companies run. SAP Business One is a separate product with its own maintenance rules, and its current release, 10.0, is maintained until 31 December 2028. The ECC deadline does not touch a Business One system.

It can still touch your business.

If you supply a large company that runs ECC, its move away from ECC can change how it orders from you, receives your goods and pays you.

Checked against SAP's own support pages on 28 October 2026.

Three products with "SAP" in the name

The confusion starts because people say "SAP" for three different things.

1. SAP ECC is SAP ERP 6.0, part of SAP Business Suite 7. It is built for large companies, and many big manufacturers, FMCG firms and retailers run on it.
2. SAP S/4HANA is SAP's successor to ECC. When a large customer says it is "moving to S/4", this is what it means.
3. SAP Business One is SAP's ERP for small and mid-sized companies. It has its own software, its own partner network and its own maintenance policy.

The 2027 deadline is about the first one only.

What ends at the end of 2027

SAP's maintenance strategy page for SAP S/4HANA and SAP Business Suite 7 says mainstream maintenance for Business Suite 7 core applications runs until the end of 2027. After that, customers can buy extended maintenance for three years, from the start of 2028 to the end of 2030. It costs a premium of two percentage points on the maintenance basis.

Customers who do not take extended maintenance move to what SAP calls customer-specific maintenance.

So ECC does not switch off on 1 January 2028. The software keeps running.

The cost of support goes up, and every ECC customer comes under pressure to plan its move. That pressure is what you will feel as a supplier.

What a Business One user should check instead

SAP keeps a separate page for SAP Business One maintenance. The rules on it are short.

1. Each release family gets at least five years of mainstream maintenance, counted from its general availability date.
2. Extended maintenance is not offered for Business One. When mainstream maintenance ends, it ends.
3. Release 10.0 is in mainstream maintenance until 31 December 2028. SAP marks that date as subject to change.
4. Releases 9.3 and older are already out of mainstream maintenance. They get no corrections and no new functions.
5. SAP says Version 11 will follow Version 10. The page gives no release date for it as of 28 October 2026.

So for a Business One user, 2027 is the year to plan and 2028 is the deadline. If you are still on 9.3 or older, your date has already passed.

To see your release, open the Business One client and go to Help, then About SAP Business One. Note the version and the patch level.

Then I would ask the partner three questions, in writing:

1. What is our plan to stay on a maintained release after 31 December 2028?
2. Does the upgrade need a newer database version or new server hardware?
3. Which add-ons, print layouts and custom reports must be tested again, and who pays for that testing?

The second question links to Microsoft's dates. If your Business One runs on Microsoft SQL Server (it can also run on SAP HANA), check the SQL Server version too. SQL Server 2017 loses support on 12 October 2027. The full list is in End of support in 2027: Windows Server 2016, SQL Server 2017 and factory PCs.

I expect the third question to be where an upgrade costs more than planned. Every report a partner wrote for you years ago was written for the old release. Somebody has to open each one, run it on the new release and compare the numbers.

Put that job on the plan with names and dates, or it gets done in a hurry after go-live.

If you supply a company that runs ECC

This is where the 2027 date reaches a small manufacturer. Some of your large customers will spend 2027 and 2028 moving to S/4HANA or another ERP, and as a supplier you feel each move from the outside.

When a big customer changes its ERP, these are the things that can change for its suppliers:

1. Your vendor code. A new system can give you a new code, and invoices that quote the old one get stuck.
2. The purchase order. The format, numbering and printed terms can all change. Read the first new PO line by line, especially the delivery address and the payment terms.
3. Documents with the delivery. Some customers start asking for an advance shipping notice (ASN), a barcode label on every carton, or EDI messages instead of e-mail.
4. A supplier portal. Invoices, delivery schedules and payment advice may move to a portal you have to log into.
5. Vendor master details. They may ask for your GSTIN, PAN, bank details and Udyam certificate again. I would send the Udyam certificate every time, without being asked. The 45-day payment limit for micro and small suppliers under the MSMED Act helps you only if the buyer's new system knows your status.
6. Payments around go-live. In the weeks around a cut-over, payment runs can slip. Plan your cash for it.

One warning has nothing to do with software. A system change is good cover for fraud. If an e-mail asks you to change the bank account you are paid into, or says the customer's own bank details have changed, confirm it on a phone number you already have. Never use the number printed in that e-mail.

Questions to ask a big customer in 2027

Ask the purchase or accounts team once, early in the year, and again a month before their go-live:

1. Are you moving off SAP ECC, and when is the go-live date?
2. Will our vendor code, PO format or invoice address change?
3. Will you need ASN, EDI or carton labels from us after go-live?
4. Whom do we call if a payment is stuck in the first month?

Write the answers down with the date. If their go-live falls in your peak season, you want to know in January, not in October.

Should a small factory change its ERP because of 2027?

No. I do not see the ECC date as a reason for a Business One user to change anything except its own upgrade plan. A bigger ERP brings bigger licence, partner and training costs, and it makes sense only when the business has grown into it.

If you are choosing an ERP for the first time, our checklist for choosing an ERP for a small manufacturer covers what to test before you sign.

I should be clear about my own limit here. I am a user of Business One, not an SAP partner, so I cannot tell you what your upgrade will cost or how long it will take. Your partner can, and that answer belongs in writing too.

Open Help, then About, and note your release number today. It takes ten seconds, and it tells you which of these dates is really yours.