mistake, error
La policía comprendió su terrible error.
The police realized their terrible mistake.
— Paddington 2 (2017)
Por lo que sé, él nunca cometió tal error.
As far as I know, he never made such a mistake.
This isn't my fault.
Don't make such a mistake.
I don't know what mistake you're talking about.
— La venganza de Manon (1986)