Error handling

[Fonty]

Is it enough to insert the On Error GoTo XXXXX procedure at the begining of every sub, in order to trigger XXXXX whenever an error occurs?

[Dnereb]

If XXXXX is A label somwhee in your code... Yes.

But todo Propper Error handling use an area at the end of exch sub/function to handle the expected errors en display an error message if the error was unexpected or critical for your programn flow.

To speed up this process you can download M-Z tools for VBA (free)
to generate the basic error handling code.