The implication being that fixation is not a universal requirement.

There are no universal requirements mandated for seller financing.

The three nearly universal requirements of are:

At this point, a thesis became a universal requirement for all advanced degrees.

Latin was reestablished as a universal requirement for the liturgy.

The universal requirement is that the candidate for membership has to be of good moral fiber.

Disinfection is not a universal requirement nor is it necessary on the majority of surfaces within any food operation.

Slower and slightly less universal requirements would be imposed on smaller companies.

Milk seems to be a universal requirement as are diapers for the very young.

In fact, there is no such universal requirement, though some Polish schools do take their students to the site.