SAP官网链接：
https://help.sap.com/viewer/9d346683b0084da2938be8a285c0c27a/2011/en-US/8c19ab00866910148f87bf32d4a60d38.html?q=omni%20channel%20connectCommerce Cloud提供了一组称为Omni Commerce Connect的Restful API, 简称OCC.
使用OAuth 2.0最大的好处是API客户端不需要保存甚至去获取用户的credential, 而是使用Access Token消费API.
OCC API支持的场景
Viewing the list and details of all placed orders.
Managing already existing product reviews and placing own product-specific reviews.
Checking the lists of available points of service and verifying stock levels for local services.
Integrating external systems to create navigation and content structures.
Ensuring fast and optimized search.
Exploring detailed product information.
Ensuring proper user administration.
Managing cart details in efficient and effective manner.
Managing and reviewing promotion details.
Managing vouchers.
Managing customer data.
API文档
OCC架构
