Sometimes it may be helpful for us to find the root cause of the unexpected Fiori application behavior if we can debug the Fiori’s back-end ABAP code. Before we start, there is some basic information we need to know: The browser’s “Developer tools”: This is the tool we can use to debug the JavaScript code, get all the necessary information on the HTTP requests in the browser.
For Backend you must know Data Provider Class: This class (ABAP code) locates in the back-end system and is used to provide the data. So if we find no data or incorrect data in the Fiori application, we can debug the data provider class in the back-end system.
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through the OData service name we can get the package name and the data provider class which will be needed to debug the ABAP code of getting data.The method of the data provide class invoked in the back-end system looks like GET_ENTITY, GET_ENTITY_SET to return the response.