Sage + Keystone
Keep your Sage. Replace the spreadsheets running production.
Sage 50, 200 and X3 are reliable accounting platforms. They are not built for batch traceability, mock-recall workflows, or retailer-specific dispatch templates — and they should not be. Keystone is the production layer that sits next to Sage and feeds clean invoiced sales back. No Sage replacement. No ERP migration. No Mary-in-accounts learning a new ledger.
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Proof points
In one glance.
- Compatible with Sage 50, Sage 200 and Sage X3 — Intacct on roadmap
- Invoiced sales publish from Keystone → Sage on dispatch — no double entry
- Your finance team keeps using Sage exactly as they do today
- BRCGS-grade traceability and audit trail Sage was never designed to give you
The architecture
Finance in Sage. Production in Keystone.
Most small and mid-sized food manufacturers do not need a full ERP replacement project. They need a reliable accounting package — which Sage already is — connected to a production and operations layer that actually matches how the factory works. That is the entire pitch. Sage stays where it is. Keystone takes over the operational reality: orders, planner, batches, QC, dispatch notes, COAs, pallet labels, customer codes, full traceability.
Where Sage stops
You have already felt this.
If you have spent more than a year trying to make Sage handle batch numbers, you know the pattern: custom fields, third-party traceability add-ons, exports to Excel that get re-imported, audit-log gaps the BRCGS auditor noticed. None of that is a Sage fault — it is a category mismatch. Sage was built to keep the ledger correct. Keystone was built to keep production reality correct.
How the integration works
One direction by default. Clean. Auditable.
- Invoiced sales — Dispatched orders post to Sage as invoiced sales via the relevant API — Sage 50 SDO, Sage 200 Web API, Sage X3 web services.
- Customer master — One-way Sage → Keystone sync of customer master is standard. Two-way is a scoped option.
- Stock movements — Optional stock-movement push for producers who use the Sage stock ledger.
- Failure-safe — Failed posts queue and retry. If Sage is down for maintenance, Keystone catches up automatically — no lost writes.
What this is not
Not anti-ERP. Pragmatic-ERP.
A large multi-site producer with plant automation, MES, advanced costing and EDI may genuinely need a full ERP or a Sage X3 + bolt-on stack. For them, Keystone may sit below ERP as a specialist operational layer or serve a single site. For most artisan, family-owned and mid-market producers — the kind already using Sage 50 or 200 — running Sage + Keystone side by side is faster, cheaper and lower-risk than any ERP migration.
FAQs
Frequently asked.
Which version of Sage do you support?
Sage 50 (SDO + REST), Sage 200 (API + Web API), Sage X3 (web services). Sage Intacct on the 2026 roadmap.
Is the Sage integration included in the licence?
No — scoped as a one-time integration fee during implementation. Typical Sage 50: €1,500–€3,500. Sage 200: €3,500–€6,500. X3: from €6,500.
Will my finance team need retraining?
No. Finance keeps working in Sage. The only change is that some sales invoices now appear posted by Keystone rather than typed by hand. Most teams stop noticing within a week.
Can I do the Sage integration myself?
Yes — our API is documented and our integration code is open for inspection. Most customers prefer us to configure it once and own the maintenance.
What happens at year-end?
Sage holds your year-end exactly as it does today. Keystone is read-only for historical periods. No risk of post-period adjustments.
Is this a Sage replacement?
No — this is the opposite of a Sage replacement. Sage stays. Keystone replaces the spreadsheets that currently run production.