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SAP Business One to SAP S/4HANA integration — real-time, two-way sync

Keep SAP Business One and SAP S/4HANA in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.

  • SOC 2 and 6 other compliance frameworks
  • POC with real engineers in minutes

Adopted by fast-scaling companies moving mission-critical data in real time

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Why teams connect SAP Business One and SAP S/4HANA

Two ERPs, one set of facts: Stacksync keeps SAP Business One and SAP S/4HANA consistent in real time, whether they split the business or one is replacing the other.

Companies run two ERPs for structural reasons: a two-tier setup with subsidiaries on lighter systems, an acquisition that brought its own stack, a split by function or region, or a migration that will take quarters. In all of these, some of the same organizations, people, and transactions exist in both systems, and keeping them aligned by hand is a standing tax on the back office.

Stacksync syncs Purchase Orders, Deliveries, Journal Entries, Warehouses in SAP Business One with Business Partners, Sales Orders, Purchase Orders, Products / Materials in SAP S/4HANA bi-directionally and in real time, with field-level mapping across the two data models and conflict rules you define. A record changed in either system is reflected in the other within seconds, not at the next interface run.

Common use cases

  • Mirror items, stock levels, and price lists to external channels so quotes and listings use current ERP data.
  • Replicate invoices and journal entries into a SQL database for reporting without direct ERP database access.
  • Feed S/4HANA financial and logistics documents into a data warehouse for reporting without custom ABAP extracts.
  • Keep supplier records aligned between S/4HANA procurement and third-party spend platforms.

Two-tier roll-up

Where subsidiaries run one system and headquarters runs the other, shared records and transactions flow up continuously, so consolidation starts from live data.

Migration in parallel

When one system is replacing the other, run both fully live during the transition and cut over without a data freeze.

Shared master data

Where both systems keep records of the same customers, suppliers, or organizations, a correction in either updates the other.

What you can sync between SAP Business One and SAP S/4HANA

Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.

SAP Business One objects SAP S/4HANA objects
Business Partners Combined customer, vendor, and lead master records; the anchor object for most syncs. Sales Orders Order headers and line items synced to CRMs and fulfillment systems as they are created or amended.
Items Product master data including inventory levels, aligned with e-commerce and warehouse systems. Purchase Orders Procurement documents shared with supplier portals and spend-management tools.
Sales Orders Order documents with header and line structure created from external channels. Products / Materials Material master data distributed to e-commerce, PIM, and CRM catalogs.
A/R Invoices Billing documents synced outward for CRM visibility and payment tracking. Billing Documents (Invoices) Invoice data pushed to CRMs and payment or collections tools for finance visibility.
Purchase Orders Procurement documents exchanged with supplier-facing tools. Deliveries Outbound delivery status synced to customer-facing systems for order tracking.
Deliveries Fulfillment documents read to update shipment status in external systems. Journal Entries Financial postings read into warehouses and consolidation tools for reporting.
What ships with SAP Business One ⇄ SAP S/4HANA

Connect SAP Business One and SAP S/4HANA for flexible, real-time data sync.

Real-time sync, workflow automation, event queues, EDI, and monitoring, for every SAP Business One–SAP S/4HANA connection.

Real-time

Two-way sync

Changes in SAP Business One or SAP S/4HANA instantly reflect in both systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever SAP Business One or SAP S/4HANA data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.

At scale

Event queues

Handle millions of events per minute without losing a single SAP Business One or SAP S/4HANA record.

Observability

Monitoring

Track your SAP Business One ⇄ SAP S/4HANA sync health, view errors, and replay failed events in one click.

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions between SAP Business One and SAP S/4HANA.

How the SAP Business One and SAP S/4HANA connectors work

SAP Business One

Integration surface
Service Layer, a REST API based on OData, plus the legacy COM-based DI API
Authentication
Session-based login with company database, username, and password against the Service Layer
Change detection
Polling on update timestamps; no general-purpose webhook mechanism on the standard surface
Capabilities
read · write

SAP S/4HANA

Integration surface
OData REST APIs (v2/v4), with SOAP, BAPI/RFC, and IDoc interfaces on on-premise editions
Authentication
OAuth 2.0 with communication arrangements on cloud editions; basic auth or certificate-based on-premise
Change detection
Polling on change timestamps exposed by the OData services; business events can be emitted through SAP's event infrastructure on cloud editions
Capabilities
read · write
Rate limits
Subject to the platform's API rate limits, which vary by edition and communication arrangement
How it works

How to connect SAP Business One to SAP S/4HANA — three steps, no code

Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.

  1. 01

    Connect your apps

    Authenticate SAP Business One and SAP S/4HANA with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.

    • OAuth 2.0
    • SSH tunnel
    • VPC peering
    SAP Business One connected
    SAP S/4HANA connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the SAP Business One and SAP S/4HANA objects to sync — Stacksync auto-detects both schemas, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.

    • Standard objects
    • Custom objects
    • Auto-schema
    objects · SAP Business One ⇄ SAP S/4HANA
    Customers 12,480
    Sales Orders 8,213
    Invoices 5,902
    Items 1,344
  3. 03

    Map fields

    Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.

    • Auto-map
    • Type casting
    • Transforms
    SAP Business One SAP S/4HANA
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

SAP Business One and SAP S/4HANA integration FAQ

SECURITY

Security teams love Stacksync

As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.

Learn more about security
SOC 2 type II
ISO 27001
HIPAA BAA
GDPR
CCPA
CSA STAR
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS

SSO & SCIM

Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.

Alerts

Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.

Secure connection options

Securely connects to your systems with:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more

Related integrations

Every pair below is a real-time, two-way sync. Search all 386 integrations available for SAP Business One and SAP S/4HANA.

Popular · 8 of 386
All SAP Business One integrations All SAP S/4HANA integrations Browse all integrations
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