Last Updated: Sep 21, 2026
InfiPlex Inventory & Order Management System (OMS) connects to Amazon through the Selling Partner API (SP-API), the connection Amazon requires since the retirement of the older MWS APIs. The InfiPlex app is listed in the Amazon Seller Central Partner Network and covers everything the earlier MWS-based connection did. 
What the Connection Covers
- Orders
- Shipping and tracking confirmations
- Inventory
- FBA Multi-Channel Fulfillment
- Amazon Shipping
- Amazon custom product information
View the InfiPlex OMS SP-API app on the Amazon Partner Network.
Connecting Your Account
The Amazon Seller Central account owner authorizes the connection directly from the Amazon integration page in InfiPlex: click through, log into Seller Central, and confirm that InfiPlex can manage orders for the account. The connection is active as soon as that authorization completes.
For the field-by-field settings, see the Amazon SP-API Guide.
Moving from an Older Amazon Connection
Contact InfiPlex to migrate an existing account onto the current SP-API connection; new accounts are typically connected and running in 1 to 2 business days, with set-up support included.
More SP-API Information
- InfiPlex Pricing
- Amazon Integration
- Amazon SP-API Integration Set-up
- Amazon SP-API Guide
- Amazon Selling Partner API Developer Guide
Set-up Support
Contact InfiPlex with any the SP-API connection questions. Support is included with every InfiPlex package.
