Integrate with ShipBob:
Login to your Amazon Seller Central Account: https://sellercentral.amazon.com/gp/account-manager/home.html
Under Third party developer and apps ,click Visit Manage Your Apps.
Under Manage your apps, click on Authorize new developer.
Enter the following details:
Developer’s Name: Shipbob
Developer’s Account Number: 2252-3742-0042
Once done, you will get Amazon MarketPlace access details.
Now, on the Shipbob Dashboard, enter the Seller ID and MWS Auth Token to the right box.