Oracle Fusion Cloud ERP and Cin7 integration

What moves between them

The main flow runs from Oracle Fusion into Cin7. Invoice headers and GL journal lines from Fusion are polled on a schedule aligned with your financial close cycle, transformed to Cin7's purchase and journal schema, validated against Cin7's Chart of Accounts to ensure account combinations exist, and posted as purchase records or journal entries. Supplier and customer master records are also synced so Cin7's vendor and customer lists stay aligned with Fusion's. Data moves one direction only; Cin7 does not write back to Fusion.

How ml-connector handles it

ml-connector obtains a Fusion OAuth bearer token and refreshes it before expiry, then polls Fusion's invoice and journal APIs filtering by LastUpdateDate on a schedule you define. For each record, it looks up the GL account combination in Cin7's read-only Chart of Accounts to validate that the posting account exists and is active before attempting the post. It presents the API key credentials as custom headers to Cin7, handles rate limits per Application Key with exponential backoff, and stores every transformation and API call in the audit trail. If a Cin7 post fails (bad account, missing supplier, network error), the record remains queued and can be retried from the audit UI without re-fetching from Fusion. Supplier and customer records are synchronized first so that foreign keys on invoices and journals point to existing entities in Cin7.

A real-world example

A mid-sized manufacturing company uses Oracle Fusion Cloud ERP for financials and procurement, and Cin7 Core for inventory and order management across three regional warehouses. Before integration, the accounts payable team received invoices and journal extracts from Fusion each week and manually entered them into Cin7, then spent time reconciling GL balances between the two systems. With Oracle Fusion and Cin7 connected, each invoice and payables GL journal from Fusion flows directly into Cin7 on a schedule tied to the financial close calendar. Account validations prevent bad postings, and the audit trail lets the team quickly see which records posted and which failed, cutting the manual reconciliation time to near zero.

What you can do

• •Poll Oracle Fusion invoices and GL journal entries on a schedule tied to your financial close, filtering by LastUpdateDate.
• •Validate GL account combinations against Cin7's Chart of Accounts before posting to ensure every entry lands on an active account.
• •Authenticate with Fusion OAuth 2.0 and Cin7 API keys, refreshing tokens before expiry.
• •Sync supplier and customer master records first so payables entries reference existing vendors in Cin7.
• •Store every record, transformation, and API call in the audit trail so failed postings can be investigated and replayed.

Questions

Which direction does data move between Oracle Fusion and Cin7?

Data flows from Oracle Fusion into Cin7. Invoices and GL journal entries from Fusion are polled, validated, and posted into Cin7's accounting module. Supplier and customer master records are also synced. Cin7 does not write back to Fusion; the Chart of Accounts in Cin7 is read-only via API.

How does the integration handle the different authentication schemes?

Oracle Fusion uses OAuth 2.0 Client Credentials against the OCI Identity Domain, returning a JWT bearer token valid for about one hour. ml-connector refreshes the token before expiry and includes it in the Authorization header. Cin7 uses custom API key headers (api-auth-accountid and api-auth-applicationkey), which ml-connector presents on every request.

What happens if an invoice or journal line fails to post to Cin7?

ml-connector tracks the failure in the audit trail with the reason (invalid account, missing supplier, network error, etc.). The record remains queued and can be retried from the audit UI without fetching from Fusion again. Supplier and customer records are synced first to ensure foreign keys point to existing entities.