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User/Customer session — required to add orders from user’s name. Available by Authenticate method sending user login and password previously created. You can get session ID using AuthenticateInstanceOperator method.
Provider session — required for operations with Autopurchase module. It is bound with external systems like Taobao and (in this example) depends on your Taobao account and login. Read more how to get in description of Autopurchase module.
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