These are step by step instructions to Create Custom app and Connect to ECGrid Simplify Connector:  

  1. In Simplify, you can create a connection. To create a connection access the Manage User page through the menu option on the left.
    1. Login User: Click Login as User.
    2. The menu option on the left: Click My Connections.
    3. Create connection: Click Add Connection.
    4. After that, a dialog box appears on the right: Find and choose Amazon Seller Central.
    5. Displays a dialog to connect with Amazon Seller Central. 
  2. In Amazon Seller Central , after login Amazon.  
    1. Open the menu on the left: Click hamburger button.
    2. Select Apps and Services > Select Develop Apps.
    3. To add the new client: Click Add button.
      1. Then, we have to select all the options below.
      2. To save: Click Save button.
    4. Once saved, a new client will be created.
    5. To get Client ID and Client Secret: Click View button in the LWA credentials column to copy the Client ID and the Client Secret.
    6. To get Merchant Id: Click Setting button.
      1. Choose Account Info.
      2. Then, Choose Business Information > Choose Your Merchant Token.
      3. Finally, copy Merchet Token you're using.
    7. To get Refresh Token:  
      1. Select Down Arrow button > Select Authoriza
      2. To get Refresh Token: Click Authorize app
  3. After getting the Client ID, the Client Secret, and the Merchant Id  from Amazon:
    1. Copy the four fields into the Simplify dialog and give your connection a name.

    2. Connect connection: Click Connect Button.