I have the array formula below which gives me a result when there is data but
when the data is missing, which is what I am checking for I get "#N/A" I
would like it to be a blank cell, ("") I have tried using "=if(isna( " and
combination, but get a too many arguments for this function error

{=index(Lpilot,match(1,(text(ldate,"ddmmyy")=text( #a136,"ddmmyy"))*(B$129=Ltype),0))}

any ideas / help

SPB