Breadcrumbs

Guide for Amazon FBA/FBM Private App

PART 1: Creating private Amazon App Seller Account

  1. Login into your Seller Central account through this link https://sellercentral.amazon.com/

  2. In the Top navigation bar look for the "Partner Network" menu and expand it similar to the screenshot below

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  1. Click on "Develop Apps" from the "Partner Network" menu

  2. Choose/Create your own profile while redirecting to a partner network

  3. You'll need to register for a developer profile and fill the following details:

    1. Organization name - name of your business

    2. Organization home country - country

    3. Primary contact name - name of account admin

    4. Contact email - email of account admin

    5. Contact country code | Contact phone number - phone number of account admin

    6. Data access section - Please enter the values as per the screenshots below

    7. Explain your primary business activity on Amazon and how your business will utilize Selling Partner API in its operations

      • A: We want to use SPI API to develop in-house solutions for managing warehouse inventory. We would like to send inventory to amazon using FBA, Coordinate shipping and BOLs, Manage returns

    8. Describe the application or feature(s) your organization intends to build using the functionality in the requested roles

      • A: Ability to send and manage inventory with FBA - Ability to manage returns - Ability to generate shipping labels and BOL for FBA

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  1. Once you register for the developer profile, your profile would be "Under Review". This will last up to 10 minutes before the profile is auto-approved.

  2. Once the developer profile is approved click on the "+ Add New App Client" button similar to the screenshot below

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  1. Please enter the details of the app as follows and click "Save and Exit":

    1. App name - Hopstack app

    2. API type - SP API

    3. att_4_for_1915584513.png
  2. On the developer screen against the newly created "Hopstack" app click on the downward arrow next to the Edit App button as shown below

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  1. Click on "Authorize App" within the relevant marketplace as shown below

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  1. IMPORTANT: Once Authorized there would be a long "refresh token" generated. Please copy and store that securely. We will need it in a subsequent step.

  2. Go Back to the developer screen and click "View LWA Credentials" as shown below

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  1. Copy the "Client Identifier" and save it securely

  2. Expand the "Client Secret" section and copy the code, save it securely

  3. Obtain “Merchant Token“

    You can view your merchant token by following these steps:

    1. From the Settings drop-down menu, select Account Info.

    2. Select the Business Information section.

    3. Click on Your Merchant Token.

      image-20260320-144614.png
  4. At this point, ensure you have the following three pieces of information. If any of these details are missing kindly verify all steps of this document have been followed:

    1. Refresh Token

    2. Client Identifier

    3. Client Secret

    4. SellerID/Merchant Token


Part 2: Onboarding a Customer to the Hopstack Platform and Connecting the Amazon Seller Account

  1. Login to Hopstack Portal through the link and credentials provided

  2. Navigate to "integration management" as shown below

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  1. Click on "Connect" on the "Amazon" integration. Enter the details that were stored securely earlier in this document

  1. Screenshot 2026-03-20 at 7.46.51 AM.png

    Once you "Submit"

  2. You're completely set up and good to go


Support

If you have any questions or face any issues in the implementation, please email: support@hopstack.io