Selling Partner API end points are associated with a particular AWS Region. The AWS Region is important because it is part of the credential scope, which is required for calculating a signature when calling the Selling Partner API.
|Selling region||Endpoint||AWS region|
|North America (Canada, US, Mexico, and Brazil marketplaces)||https://sellingpartnerapi-na.amazon.com||us-east-1|
|Europe (Spain, UK, France, Netherlands, Germany, Italy, Sweden, Poland, Saudi Arabia, Egypt, Turkey, United Arab Emirates, and India marketplaces)||https://sellingpartnerapi-eu.amazon.com||eu-west-1|
|Far East (Singapore, Australia, and Japan marketplaces)||https://sellingpartnerapi-fe.amazon.com||us-west-2|
Updated almost 2 years ago