Building a Fiori app using CPI (SAP Cloud Platform Integration) integration API involves several steps. Here's a high-level overview of the process:Understand Fiori App Requirements:Clearly define the requirements of your Fiori app, including data sources, user interactions, and overall design.Design the Integration Flow in CPI:Identify the data sources and endpoints you need to integrate with.Design the integration flow in SAP CPI, specifying the communication channels, data mappings, and transformations.Expose APIs in CPI:Expose APIs in CPI that will be consumed by your Fiori app. This involves configuring integration artifacts such as Integration Flows and OData services.Configure Security:Set up security measures such as authentication and authorization for both the CPI integration and Fiori app. Ensure secure communication between the app and CPI.Develop Fiori App:Use SAP Fiori tools or SAP Web IDE to develop your Fiori app. You can choose between various templates and design patterns provided by SAP Fiori.Connect Fiori App to CPI APIs:Utilize the OData services or other APIs exposed in CPI within your Fiori app. Configure the necessary destination in the SAP Cloud Platform Cockpit to connect the Fiori app to the CPI APIs.Implement UI5 Controls:Implement the user interface of your Fiori app using SAPUI5 controls. Bind these controls to the data retrieved from CPI APIs.Test Integration:Test the integration between your Fiori app and CPI to ensure that data is being exchanged correctly. Use tools like SAP Fiori Launchpad for testing the app in different scenarios.Deploy and Monitor:Deploy your Fiori app to the SAP Fiori Launchpad. Monitor the integration and app performance to identify and resolve any issues that may arise.Documentation and Training:Document your integration and app development process for future reference. Provide training materials for users if necessary.