Sentence examples similar to declaration is mandatory from inspiring English sources

The rules for the declarations are similar to Two-player Tute, but it is mandatory to declare the cards after a player or the partner begins a baza.

3.1.1 Nutrient declaration should be mandatory for foods for which nutrition claims, as defined in Section 2.4, are made.

A helmet is mandatory.

Heft is mandatory.

Picture snapping is mandatory.

Getting down is mandatory.

And haggling is mandatory.

It is mandatory.

Clearly, diligence is mandatory.

Attendance is mandatory.

Grading: Attendance is mandatory.