INTEGRATIONS
Connect the Systems Your Business Already Depends On.
Integration layers across ERP, CRM, WMS, TMS, finance, customer portals, email, WhatsApp and internal systems — built so that one record means the same thing in every system that holds it.
One source of operational truth. Stop re-keying between systems that were never designed to talk to each other.
- Systems of recordERP · CRM · WMS / TMS
- Commercial systemsFinance · contracts · payments
- Inbound channelsEmail · WhatsApp · forms · documents
- Normalization & mappingOne shape for each business object
- Business rulesWhat is allowed to change, and by whom
- API / event layerIdempotent writes, replayable events
- ReconciliationBoth sides compared, drift surfaced
- Target systemsWritten once, idempotently
- Operational surfaceOne current view of the record
| Field | Owner | State |
|---|---|---|
| customer_id | CRM | authoritative |
| order_id | ERP | authoritative |
| status | WMS | reconciled |
| amount | Finance | authoritative |
Illustrative — not client data. Field names and owning systems are generic examples.
Your employees should not be the integration.
Every pair below is a place where someone currently reads a value in one screen and types it into another. That is not a data problem — it is a missing connection.
ERP ⇄ CRM
Customers, orders and pricing current on both sides.
CRM ⇄ Finance
A closed deal becomes an invoice without re-entry.
WMS ⇄ Customer portal
Stock and fulfilment state visible without a phone call.
Email ⇄ ERP
Inbound requests captured as records, not as inbox items.
WhatsApp ⇄ Workflow
Messages become tracked work with an owner and a state.
Documents ⇄ Records
Every file attached to the record it belongs to.
HR ⇄ Payroll
One employee record, changed once.
Sales ⇄ Contracts ⇄ Payments
One commercial chain instead of three systems.
An integration layer, not a pile of point-to-point links.
Point-to-point connections are cheap to build and expensive to own: every new system multiplies them. A governed layer costs more at the start and stops growing after that.
Source-of-truth ownership is declared per field
Before anything is built, each field gets one owning system and a written rule for what happens when another system disagrees. This table is a deliverable, not documentation written afterwards.
| Field | Owning system | Conflict rule |
|---|---|---|
| Customer ID | CRM | CRM wins. Other systems hold a reference, never a second identity. |
| Order ID | ERP | ERP issues it. Nothing downstream may mint its own. |
| Status | Operational system | Latest timestamped transition wins; disagreement raises a reconciliation item. |
| Amount | Finance | Finance is authoritative. A mismatch blocks the sync rather than overwriting it. |
Integrations fail quietly. That is the whole problem.
A broken sync does not throw an error at anyone who cares. It just stops, and the two systems drift apart until someone notices the numbers do not match.
What we build in from the first sync
- Idempotency, so the same event arriving twice does not create two records.
- Retries with backoff on transient failures, bounded rather than infinite.
- Dead-letter handling — failed messages are held and replayable, never dropped.
- Audit logs, so any record can be traced back to the event that changed it.
- Mapping validation, so a renamed field fails loudly at deploy rather than silently in production.
- Access and security boundaries, with credentials scoped per integration.
- Alerting on failed syncs, and on silence where there should be traffic.
Reconciliation runs on a schedule and reports differences as work items, so drift is surfaced rather than discovered.
How conflicts are resolved
- Owner wins
- The declared owning system is authoritative for that field.
- Latest wins, with a record
- Where both may change it, the later transition applies and the earlier one is logged.
- Block and raise
- Where being wrong is expensive, the sync stops and a person is asked.
- Never silently overwrite
- No resolution path ends in data disappearing without a trace.
Integration work already running in production.
Described as architectures rather than as named accounts. The platforms are named because they identify the stack; the organizations are not.
- Representative architecture
Lead-to-cash across four platforms
CRM to orchestration to e-signature to payments, as one commercial chain. Each hop is idempotent and reconciled, so a signed document and a captured payment cannot disagree about the state of the deal.
- HubSpot
- n8n
- DocuSign
- Stripe
- Octacer internal system
Multi-domain integration inside one operating system
Octacer’s own platform integrates across many business domains behind a shared identity and permissions model, which is where field ownership stops being a diagram and starts being enforced in code.
- Shared identity
- Field ownership
- Multi-domain
Systems we are most often asked to connect
- SAP
- Odoo
- Microsoft Dynamics
- Salesforce
- HubSpot
- WMS / TMS
- Finance and invoicing
- HR and payroll
- Databases
- Custom APIs
Connector coverage is the easy part. What determines whether an integration survives is mapping, ownership, conflict rules and monitoring — which is where the work actually goes.
Map the systems involved and the data your team still moves by hand.
Bring the two systems that disagree most often. The review returns the field-ownership map, the conflict rules and the first integration worth building.