I am in h4 visa and my h1b visa is approved (COS) on 9th november. I got informed by my employer on 15th november and same day the online status got changed as h1b approved. My employer received the original copy on dec 10 from lawyer.But till now I haven’t initiated my ssn application. I am waiting for the h1b original copy from my employer that he posted yesterday.I am going to receive this week. Is there a any time limit to initiate ssn application immediately after h1b approved?Is that a problem?pls help.