3676502 - Error popup by opening the My Timesheet (S/4HANA / Version 4) application

By opening the My Timesheet V4 application there is a popup with error.

The error can be

• "Error"  Destination is initial
• "Error" Invalid parameter input for OAuth
• or else

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.   

In the browser console log :
Request failed with status code 500: GET HCMTimeShtEmplAdminAlerts

There is an entry in gateway error log also. The Message ID/Number can be different. As an example:

    .....MESSAGE_ID    SHTTP
    .....MESSAGE_NO    858
    .....MESSAGE_TYPE    E

    .....Program    CL_CATS_CTR_SF_CONNECT_UTIL===CP
    .....Include    CL_CATS_CTR_SF_CONNECT_UTIL===CM00A
    .....Line    31

SAP FIORI FOR SAP S/4HANA 2023

My Timesheet (S/4HANA / Version 4)

Consolidated Time Recording, TSMYTIMESHEETS1, hcm.fio.mytimesheets1, UI_HCMMYTIMESHEET , SHTTP/853, SHTTP/858 , KBA , PA-FIO-TS , My Timesheet / Approve Timesheet , How To