Full Idea
A proposition may have a minimal truth-maker which is not unique, or a sentence may be made true by no single truth-maker but only by several jointly, or again only by several separately.
Gist of Idea
The truth-maker for a sentence may not be unique, or may be a combination, or several separate items
Source
Mulligan/Simons/Smith (Truth-makers [1984], §3)
Book Reference
'Truth and Truth-Making', ed/tr. Lowe,E.J./Rami,A. [Acumen 2009], p.67