Cognizant Technology Solutions — Not providing Joining

Address:

Cognizant Technology Solution India Pvt. Ltd,Upper Ground Floor, 1st , 2nd Floor, Building No-10,IT/ITES SEZ of M/s Sea View Developers Ltd, Plot No 2

Hello, My name is Amit Singh, I got selected in cognizant but they didn't provide me joining as already postponed joining three time. My latest Date of joining is 3rd of feb 2022, today I got an email that your onboarding pass could not generated because of not to uploads some documens but on the one cognizant portal all the documents uploaded successfully, means my onboarding pass has been generated but now i don't know what to do with this pass and the process.
I want to join as soon as possible.
Candidate Id[protected]