The SAP Fiori login page is a customized standard ABAP login page. You can configure the SAP Fiori login page to launch SAP Fiori launchpad
sap bc ui5_ui5 ui2 ushell. 双击并进进行编辑，
In your ABAP front-end system, open transaction SICF and choose Execute. The Maintain Service screen appears.
In the Filter Details section, enter ushell in the Service Name field. Navigate to 
default_host sap bc ui5_ui5 ui2 
and double-click on ushell. A Create/Change screen appears.
Choose 
, navigate to Error Page Logon Errors tab. Select the System Logon radio button and choose the Configuration button. A System Logon Configuration dialog box appears. Enter the following:
Under Settings Selection section, select the Define Service-Specific Settings radio button. In the Logon Layout and Procedure section, select the Custom Implementation radio button and enter /UI2/CL_SRA_LOGIN in the ABAP Class field. Save your entries.
