What you do
Create an Integration in the Commerce Admin with REST API access, and share the credentials it produces.
Magento Fulfillment: Creating the Integration
Defined in your admin, scoped to what it needs, revocable by you.
Magento Has a Purpose-Built Way to Do This
Adobe Commerce and Magento Open Source do not expect you to hand a fulfillment provider a user account. Defining an Integration in the Commerce Admin establishes where the OAuth credentials and redirect URL live, and identifies exactly which API resources the integration may reach. Third-party applications authenticate with OAuth 1.0a.
Resource-level scoping
You choose which API resources the integration can touch. A fulfillment provider needs orders, shipments and products, not everything else.Credentials you can rotate
The integration owns its own credentials, so revoking access does not disturb any human account.A record of what was granted
The Integration entry in your admin is the audit trail. You can see what access exists without reverse-engineering it.Three protocols available
Magento supports REST, GraphQL and SOAP, so a connection is possible even where a pre-built connector is not.
What that gives you:
Connecting Magento to OC3PL
One integration, defined once, in your own admin.
What to scope it to
Orders, shipments and product data. There is no reason a fulfillment integration needs anything broader.
What OC3PL does
Mapping, SKU matching, test orders and go-live, connecting directly to the warehouse management system. Live the same business day.
Magento 1 and bespoke builds
If a pre-built connector does not fit, the position is that OC3PL builds the connection, and custom integrations are company funded.
Magento Integration Questions
An integration user with REST API access — created as an Integration in the Commerce Admin, which establishes the OAuth credentials and identifies the API resources the integration may use. Third-party applications authenticate with OAuth 1.0a. The connection runs directly to the OC3PL warehouse management system and is live the same business day.
Orders, shipments and product data. Magento lets you scope an Integration to specific resources, and a fulfillment integration has no reason to reach customer or payment data beyond what an order carries. Scoping it narrowly at the start is easier than auditing it later.
Magento supports REST, GraphQL and SOAP, so a connection is usually possible even where a pre-built connector does not fit. Where it does not, OC3PL’s position is that if a connection does not already exist the in-house team builds one, and those custom integrations are company funded. Raise the requirements early in onboarding rather than at go-live.
Related Reading
The detail behind this, in OC3PL’s own guides.
Magento Fulfillment Integration
How OC3PL connects to Magento and Magento 2 — a direct warehouse management system link, the REST API access it needs, and same-day turnaround.
How OC3PL Integrations Work | WMS, API Keys and Go-Live
What connecting a store to OC3PL actually involves: one warehouse management system, an API key or app install from you, and mapping, SKU matching and test orders from us.
Why API Flexibility Matters in a Fulfillment Partner
Discover why a flexible API is critical for scaling e-commerce brands. Learn how custom API support from a 3PL solves complex fulfillment challenges.
When Your 3PL Can’t Integrate With Your Tech Stack
Discover the risks of poor 3PL integration, including fulfillment errors, inventory issues, and support tickets, and why a tech-forward partner is key.
Switching Your 3PL Integration Without Downtime
How to move your store’s fulfillment connection to a new 3PL without losing orders: the test sequence, what to run in parallel, and what to confirm before you cut over.
How to Fix 3PL API Syncing Issues
Experiencing 3PL Shopify integration problems? Learn how to diagnose and fix common 3PL syncing issues related to APIs, data, and rate limits.
Connect Magento
Tell us your Magento version and any customisation, and we will confirm what the integration needs.