The phrase "a central facet to" is correct and usable in written English.
It can be used when discussing an important aspect or feature of a topic or concept.
Example: "Collaboration is a central facet to successful project management."
Alternatives: "a key aspect of" or "an essential element of".
–In part because of the broad influence of Michael Lewis' bestselling book Moneyball, quantitative analysis has moved from its formerly geeky niche at the periphery to become a central facet of many sports.
However, his plan and the concomitant flurry of debate overlook a central facet of contemporary migration that will continue to foil the effectiveness of migrant detention and deportation: the profound debts that migrants and their families incur to fund the passage north.
With Democrats about to take over the House, the president's opportunities to win the wall money — a central facet of his 2016 campaign and one he has so far been thwarted on — are diminishing.
This actually is a central facet of all types of vipassana, which is to see what faded away and is therefore not what we are.
Racism remains a central facet of American life, but so does the resistance to it.
HS2 is a central facet of the coalition government's transport policy and was touted as an alternative to the third runway at Heathrow when the government scrapped that last year.
A central facet of our contemporary global economy is the fact that consumers are usually only able to see commodities in the here and now of time and space, and rarely have any opportunities to gaze backwards through chains of production in order to see how a commodity was made.
In the rush for economic union -- hurried to ensure that a Germany united in 1990 would be irrevocably bound to its European partners -- the fact that states adopting the euro were abandoning a central facet of sovereignty without any clear political plan was glossed over.
However, this kind of cultural revolution a rejection of the car as a central facet of American identity could also present tremendous opportunities.
Or, rather, to reveal that it had been there all along, and that race, far from being a special or marginal concern, was a central facet of the American story.
