in English, I'd use:

=if(iserror(vlookup(...)),0,vlookup(...))



Léon wrote:

When i use a formula like " VLOOKUP ", sometimes the result is #N/B. Is it
possible to change the result in 0 (zero)? It would help me to use it in
calculations. E.g. when i use SUM and one of the results is #N/B, the result
of the SUM is #N/B.

--

Dave Peterson