For a correct HCM apps working, it is necessary assign one user ID to the employee master data into the IT0105 subtype 0001 of the backend system. Otherwise the apps cannot work correctly.
To allow the users use Fiori Apps these must be updated with the following Roles that are updated for each APP into the FIORI Library.
- Gateway system. Authorization for Technical Catalog
- Back-end system Business Role and Business Group
To analyze one User authorization issue, please check the HCM Authorizations TROUBLESHOOTING GUIDE
Into the Fiori Library link every app includes the information about the Business Catalog, please check here the standard for each app.
In case the issue it is related to one Customer Catalog, check if the issue also appear with the standard one.
Use the Help SAP links to find more information about each HCM app
Check the general documentation about the tiles into the wiki link