obligatory

It's obligatory.

C’est obligatoire.

— La Dolce Vita (1960)

Hey, Sandra, it's obligatory, I guess.

Hé, Sandra, c’est obligatoire, je suppose.

— Falling Down (1993)

Presence of all members is obligatory.

La présence de tous les membres est obligatoire.

Is that obligatory, Scotland Yard?

C’est obligatoire, Scotland Yard ?

— Two Is a Family (2016)

In France, voting isn't obligatory.

En France, le vote n’est pas obligatoire.