Hi,
first you are including the cell A2 in the range to be looked up, 2nd last
part was missing in the Vlookup, try

=IF(ISERROR(VLOOKUP(A2,A3:B100,2,FALSE)),0,(VLOOKU P(A2,A3:B100,2,FALSE)))

"Help in nottingham" wrote:

Hi can someone tell my why this does not work please, have used this combo
many times in the past

=IF(ISERROR(VLOOKUP(A2,A:B,2),0,((VLOOKUP(A2,A:B,2 ))

Sample data below