Full Idea
Item x is said to be a sufficient truth-maker for truth-bearer p just in case necessarily if x exists then p is true. ...Every truth has a sufficient truth-maker. Hence, I take it, the sum of all sufficient truth-makers is a universal truth-maker.
Gist of Idea
The truth-maker principle is that every truth has a sufficient truth-maker
Source
Peter Forrest (General Facts,Phys Necessity, and Metaph of Time [2006], 1)
Book Reference
'Oxford Studies in Metaphysics vol.2', ed/tr. Zimmerman,Dean W. [OUP 2006], p.137
A Reaction
Note that it is not 'necessary', because something else might make p true instead.