Hope your well.
I applied for H1B through Employer A and visa is valid from Aug 2017 till Sep 2019.
Now I got better offer with Employer B.
Please note i did not enter into US yet and I don't have SSN, paystubs of US employer etc
I would like to know, can I transfer my H1B to Employer B on day 1 of my visit to US without SSN, Paystubs of US Employer?.