Cognizant — I am not able to login to onecongnizant external system

Address: Kolkata

I am facing an issue while trying to login at below link
https://login.microsoftonline.com/redeem?rd=https%3a%2f%2finvitations.microsoft....⇄

I have tried using different browsers and the situation is the same for all of them.

Below error I am getting -

Request Id: b0432dcc-d[protected]b17d-fcae987cab00
Correlation Id: 6ef1ad73-e320-407f-a1e5-51b61f8dd7f9
Timestamp:[protected]T06:09:52Z
Message: AADSTS50105: The signed in user '95sahelibiswas_gmail.com#EXT#@CognizantOnline.onmicrosoft.com' is not assigned to a role for the application 'bb557c9c-73c3-4026-9da2-0b57ec4204b4'(ENT_onecognizantexternal_SAML_PROD).

I tried with IE, Chrome, Edge but the same error I am facing.