- Go to Amazon services
Click on Sign up for MWS.
You need to select the option I want to access my own Amazon seller account with MWS.
Once you have completed registration you will receive several important credentials. Seller ID (Merchant ID), Marketplace ID, developer account identifier, AWS Access Key ID, and Secret Key are displayed on the final page of the Amazon MWS registration process.
Note, that this information is not emailed to you!
You should print this page or save it to your hard drive. If you need to see the credentials and identifier again, you can repeat the Amazon MWS registration process. Registering multiple times does not affect your original registration and returns the same credentials every time.
The following list shows an example of the credentials and identifiers you receive when you register to access your own seller account using Amazon MWS:
Developer Account Identifier (a 12-digit identifier): 1234-3214-4321
AWS Access Key ID (a 20-character, alphanumeric identifier): 022QF0EXAMPLEH9DHM02
Secret Key (a 40-character identifier): kWcrlEXAMPLEM/LtmEENI/aVmYvHNif5zB+d9+ct
Marketplace Id: ATVPDKIKX0DER