Not "IFERROR" - should be "ISERROR".
i have 2 columns 1 to override the v lookup in the rate table but if both of them are blank i keep getting N/A
thanks in advance
=IF(J147>0,VLOOKUP(J147,'Trade RATE Table'!C:H,6,0),IF(K147>0,VLOOKUP(K147,'Trade RATE Table'!C:H,6,0)))