Iqama transfer request (TALAB) validity - 2019

Asalaamualaikum, my new employer has raised an iqama transfer request for me online. My current kafeel is out of the country right now, with no immediate plans to come back (at least 1 month). But he is assuring me once he returns to the kingdom he will process my request. My question is, what is the validity of the iqama transfer request (talab) online?

P.S.: some people here are saying the request is valid for only 15 days, is it true?

Jazakallah.