Asalam o alaikum
My sister is going to marry a man whose father died when he was 2 years old and his mother got second marriage with another muslim man.step father replaced the real child's father name by himself.
Is it allow in islam to write the name of step father instead of the real father in nikkah documentations of that child. Because now he is going to marry with my sister now. He is 20 years old now.
And verbally announced the name of real father during nikkah.
Is that nikkah being jaiz.