Last Updated: Sep 21, 2026
InfiPlex Inventory & Order Management System (OMS) connects Amazon Vendor Central Direct Fulfillment accounts through the Amazon SP-API and pulls the shipping information for every Direct Fulfillment order. Set-up takes 1 to 2 business days, and the approved InfiPlex Vendor Central app works with any Vendor Central seller, pulling shipping addresses or Amazon-generated labels as your account requires. 
How the Connection Works
- Connect Vendor Central to the Amazon SP-API. Authorizing the InfiPlex app takes a few minutes; the Vendor Central Direct Fulfillment SP-API set-up walks through it. New orders start pulling as soon as the authorization completes.
- Connect your ERP, WMS, or shipping system. InfiPlex integrations with NetSuite, Extensiv, ShipStation, and other systems let Direct Fulfillment orders flow straight into the tool your warehouse already uses.
- Order and shipping flow. Orders pull from Vendor Central Direct Fulfillment into InfiPlex; you ship from InfiPlex or send orders to your ERP, WMS, 3PL, or ShipStation and tracking comes back; InfiPlex sends the tracking to Vendor Central to finalize the order.
Options
- Direct Fulfillment invoicing. Amazon normally auto-generates invoices, but InfiPlex can manage Direct Fulfillment invoices and pass them to an ERP such as NetSuite, which saves reconciliation time.
- Amazon-generated labels. InfiPlex can pull the labels Amazon generates for Direct Fulfillment orders. Pulling Amazon labels means shipping from InfiPlex rather than from ShipStation, since ShipStation does not accept label files from outside systems.
Get Started
Pricing and sign-up are on the Amazon Vendor Central Direct Fulfillment page. Set-up support is included, and most accounts connect within 1 to 2 business days of sign-up. The InfiPlex OMS SP-API app is an approved third-party application; view it on the Amazon Selling Partner Appstore.
Set-up Support
Contact InfiPlex with any Vendor Central questions. Support is included with every InfiPlex package.
