How to find your Amazon Seller ID, Amazon AWS Access Key, and Secret Key.
1. Navigate to Settings > Account Info.
2. Inside the Business Information section click on Your Merchant Token, which is your Seller ID. Copy the Seller ID into our secure form.
3. To find your AWS Access Key ID and Secret Key navigate to Settings > User Permissions.
4. Scroll down to Amazon AWS Developer Access Keys and select Visit Developer Credentials.
4. Under MWS Credentials click View. Copy the AWS Access Key ID and Secret Key into our secure form.