Cognizant — Unable to login into 1C portal

Hi team,

Good day.
I got offer from CTS and accepted it by completing documents upload and pre - joining formalities.
But unfortunately from today facing issue on 1c portal login issue, please find the errror message as below.

Kindly help on it.

Request Id: 59f011fc-d5cd-472b-afac-2cb4337b1d00
Correlation Id: 1a3096c0-e478-43d3-a3e7-d2eadce24f3d
Timestamp:[protected]T15:15:06Z
Message: AADSTS50105: The signed in user 'santhc.7_gmail.com#EXT#@CognizantOnline.onmicrosoft.com' is not assigned to a role for the application 'a02131c0-2463-4b51-977f-0decd70d2056'(onecognizant.cognizant.com_SAML_AzureAD).

Regards,
Manickam K.