SAP is a corporate ERP, often the group standard in large organisations. Odoo and SAP are both full ERPs, so this is not a feature integration. It is a two-tier model.
In a two-tier setup, the group runs SAP at corporate level and a subsidiary, plant or new business unit runs Odoo because it is faster and lighter to operate locally. The integration keeps the local Odoo and the group SAP aligned on the data that head office needs.
Data Flow
What Data Moves Between SAP and Odoo
The approach depends on the SAP product, since S/4HANA and older ECC expose data differently through OData services, BAPIs or IDoc messaging.
SAP to Odoo: master data such as the chart of accounts, cost centres, products and the group structure.
Odoo to SAP: financial postings, often summarised, plus the transaction data the group requires for consolidation.
What Goes Wrong
Common Pitfalls
Which SAP. S/4HANA, ECC and SAP Business One are different systems with different interfaces. The integration is specific to one.
Master data ownership. The group system usually owns master data, and Odoo must accept it rather than create its own.
Summarised versus detailed posting. Decide whether Odoo posts every transaction or summary journals to SAP.
Reconciliation discipline. Two ERPs must reconcile on a defined cycle.
Group governance. Corporate IT will have standards the integration must meet.
Setup
How the Integration Is Set Up
Confirm the SAP product and the available interfaces.
Agree the two-tier design: what SAP owns and what Odoo owns.
Map master data and the chart of accounts.
Decide detailed or summarised posting to SAP.
Build and test the interfaces with corporate IT.
Run a parallel period and reconcile before going live.
