I'm not using a view it's SQL passthrough
for example:

SQLEXEC(h,'select * from modacad where recno=220')

I found out that it happens only after the activate then refresh event
when the form is first built.

If the form is up on the screen and I trigger
the activate then refresh event no error message occurs.

I just ignored the error in my error handler,
but I don't understand why...