How to Authorize UniUni to 4Seller?

Updated on 20 Aug,2025Copy Link

4Seller Support connect UniUni Shipping Carriers, which will help sellers fulfill orders easily and efficiency!

Step 1: Setting--Carriers--UniUni

Step 2: Fill custome name--Get the Client ID, Client Secret, Customer No.--Pick Up Warehouse should contact UniUni support team to get then fill in

Note: If have multiple Pickup warehouse, could connect UniUni again with different pickup warehouse.

Step 3: After fill the Info, should click " API Testing".

Step 4: Once the testing pass, will gain the Shipping label, download it and submit to UniUni support team.

Step 5: Re-authorize and connect UniUni to 4Seller.

Any problem pls feel free to contact 4Seller Support Team: support@4seller.com.