I can't introduce new records in a table. Solved

When trying to introduce a new record in a table I get the following message:
firebird_sdbc error:
*violation of PRIMARY or UNIQUE KEY constraint “INTEG_11” on table “Tratamientos HOM”
*Problematic key value is (“ID” = 19)
caused by ‘isc_dsql_execute’
It looks like it cannot add a new record and tries to overwrite an existing one, because when I repeat the input the ID value is 20 and so on.
¿Any idea?

It is a question also in the Spanish Ask?, please don’t multipost, be a bit patient.

Answered here → No puedo introducir registros en una tabla. Resuelto

Thanks very much! The solution proposed by Ratslinger works perfectly!
Sorry to multipost, m.a.riosv, I thought there were several forum as in OpenOffice.