In order to register, we need to verify that you are an American Express Merchant. You can register with your existing Online Merchant Services User ID, or you can create a new account.
- Must be different from your User ID
- Must contain 8 to 20 characters, including at least one letter and at least one number
- May include the following characters: % & _ ? # = -
- Cannot have any spaces and will not be case sensitive.