When you login to ARB and Excelclient, you can login to both tool at the same time, however if you do the other way around,
It would show you some error like, invalid company name. I have confirmed that this is work as design, if this is work as design, can you please
show the error like " you cannot login to both ARB and Excelclient at the same time" rather than "invalid company name" for less confusion.
Regards,
Go