Real-time
Two-way sync
Changes in Bill or SAP Business One instantly reflect in both systems. No stale data, no manual imports.
Accounting and finance ⇄ ERP
Bill to SAP Business One integration — real-time, two-way sync
Keep Bill and SAP Business One 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
Case study
Migrated from MuleSoft
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Migrated from Celigo
Migrated from Heroku Connect
Migrated from Matillion
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Migrated from Fivetran
Case study
Migrated from Celigo
Why teams connect Bill and SAP Business One
Keep Bill and SAP Business One agreeing on customers, invoices, and balances, whether they split the finance workload or one is replacing the other.
A dedicated finance tool and an ERP end up side by side for practical reasons: a subsidiary runs lighter software than headquarters, billing runs in a specialist system while the enterprise system holds the wider view, or the company is mid-migration and both are live. Whatever the split, the two systems describe overlapping customers and transactions, and that overlap drifts without a live connection.
Stacksync syncs Vendors, Invoices, Customers, Payments in Bill with Purchase Orders, Deliveries, Journal Entries, Warehouses in SAP Business One in real time and in both directions. You decide which system wins on which field, and every change made in one is reflected in the other within seconds instead of at the next batch run.
Common use cases
- 01 Read approved Bills and their line items into a Postgres warehouse for spend, accrual, and cash-flow reporting without CSV exports.
- 02 Sync Customers and Invoices from BILL AR into a CRM or ERP so sales and finance see billing and payment status on the account.
- 03 Replicate invoices and journal entries into a SQL database for reporting without direct ERP database access.
- 04 Sync activities and service data with external support tools for teams that do not log into Business One.
Common sync patterns
Migration without a hard cutover
When one system is replacing the other, run both in parallel with records matching until the switch is complete.
One customer and vendor master
Where both systems keep records of the same organizations, corrections made in either propagate to the other.
Subsidiary to headquarters
Where Bill serves a business unit and SAP Business One is the group system, transactions and customer records roll up continuously, so consolidation starts from live data.
What you can sync between Bill and SAP Business One
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.
| Bill objects | SAP Business One objects | How this pairing syncs | |
|---|---|---|---|
| Customers AR customer master records; mapped to customer/account records in a CRM or ERP so finance and sales share one view. | Deliveries Fulfillment documents read to update shipment status in external systems. | Customers is specific to Bill and Deliveries to SAP Business One — each maps to any object or custom field on the other side. | |
| Payments Outgoing vendor payments and received customer payments; read for reconciliation and created to schedule bill pay. | Journal Entries GL postings replicated for financial reporting. | Payments is specific to Bill and Journal Entries to SAP Business One — each maps to any object or custom field on the other side. | |
| Chart of Accounts GL accounts used to code bills and invoices; typically mastered in the accounting system and written into BILL for consistent coding. | Warehouses Stock locations that scope inventory quantities in item syncs. | Chart of Accounts is specific to Bill and Warehouses to SAP Business One — each maps to any object or custom field on the other side. | |
| Bank Accounts Funding and deposit accounts; read to reconcile payments and posted transactions against the ledger. | Price Lists Pricing data synced to quoting and e-commerce platforms. | Bank Accounts is specific to Bill and Price Lists to SAP Business One — each maps to any object or custom field on the other side. | |
| Vendor Credits and Credit Memos AP and AR adjustments applied against bills and invoices; synced so balances stay accurate on both sides. | Activities CRM-style tasks and interactions aligned with external sales tools. | Vendor Credits and Credit Memos is specific to Bill and Activities to SAP Business One — each maps to any object or custom field on the other side. | |
| Bills Accounts-payable amounts owed to vendors, with bill line items; read and created via /v3/bills and pulled incrementally by filtering on createdTime/updatedTime. | Business Partners Combined customer, vendor, and lead master records; the anchor object for most syncs. | Bills is specific to Bill and Business Partners to SAP Business One — each maps to any object or custom field on the other side. |
How changes propagate between Bill and SAP Business One
Each direction of the sync is driven by what the source system can signal and what the destination accepts — detection, delivery, and expected latency below.
Bill SAP Business One Sub-second propagation
DetectionBill notifies Stacksync of record changes through webhook events. Webhook event subscriptions (POST /v3/subscriptions) for bills, vendors, payments, invoices, and bank accounts, with polling on.
DeliveryEach detected change is written to SAP Business One through its API, with automatic retries and rate-limit backoff.
SAP Business One Bill Interval-based propagation
DetectionStacksync polls SAP Business One for changes on an incremental schedule, reading only records changed since the previous pass. Polling on update timestamps.
DeliveryEach detected change is written to Bill through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- Bill: 20,000 requests per developer key per hour; login (POST /v3/login) capped at 200/hour; maximum 3 concurrent requests per developer key per organization. Spend & Expense API is a separate token at 60 calls/token/minute.
What ships with Bill ⇄ SAP Business One
Connect Bill and SAP Business One for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Bill–SAP Business One connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Bill or SAP Business One 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 Bill or SAP Business One record.
Observability
Monitoring
Track your Bill ⇄ SAP Business One sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Bill and SAP Business One.
How the Bill and SAP Business One connectors work
Bill
- Integration surface
- REST/JSON (BILL v3 Connect API)
- Authentication
- Session-based: POST /v3/login with username, password, organizationId, and a developer key (devKey) returns a sessionId that is passed with the devKey as headers on every subsequent call; OAuth is available for partner/embedded apps
- Change detection
- Webhook event subscriptions (POST /v3/subscriptions) for bills, vendors, payments, invoices, and bank accounts, with polling on createdTime/updatedTime list filters as the fallback
- Capabilities
- read · write · webhooks
- Rate limits
- 20,000 requests per developer key per hour; login (POST /v3/login) capped at 200/hour; maximum 3 concurrent requests per developer key per organization. Spend & Expense API is a separate token at 60 calls/token/minute.
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
How it works
How to connect Bill to SAP Business One — 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.
- 01
Connect your apps
Authenticate Bill and SAP Business One with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Bill
connected
SAP Business One
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Bill and SAP Business One 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.
objects · Bill ⇄ SAP Business OneCustomers 12,480Sales Orders 8,213Invoices 5,902Items 1,344 - 03
Map fields
Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.
Bill SAP Business OneCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Bill and SAP Business One integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Bill and SAP Business One: authenticate both systems, choose the objects to sync (such as Bill's Customers and Payments), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Stacksync is SOC 2 Type II and ISO 27001 certified with HIPAA BAA support. Data is encrypted in transit, and a zero-persistent-storage architecture means Bill and SAP Business One records are not retained after a sync operation.
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Stacksync pricing is usage-based and starts at $1,000/month, including the managed Bill and SAP Business One connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Bill–SAP Business One integration in-house.
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Yes — Stacksync ships production-grade connectors for both Bill and SAP Business One. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
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Change detection on Bill: Webhook event subscriptions (POST /v3/subscriptions) for bills, vendors, payments, invoices, and bank accounts, with polling on createdTime/updatedTime list filters as the fallback. On SAP Business One: Polling on update timestamps; no general-purpose webhook mechanism on the standard surface. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
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On the Bill side: Vendors, Invoices, Customers, Payments, plus custom fields where Bill exposes them. On the SAP Business One side: Purchase Orders, Deliveries, Journal Entries, Warehouses. Stacksync auto-detects both schemas and converts types between the two systems.
SECURITY
Security teams trust 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.
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:
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