You have assigned a business role to an end user who has been granted access...

When an end user has been assigned a business role that grants access to only one specific application, and the app does not appear on the user's SAP Fiori Launchpad, the recommended action for the user is:

Use the search function to find the app: The search function on the SAP Fiori Launchpad allows users to locate applications by their name or related keywords. Even if the app is not immediately visible on the launchpad due to configuration issues or other reasons, using the search function can help the user access the app directly. This is a quick and effective way for users to access necessary applications when they encounter visibility issues on their launchpad.