Full Idea
The coherence theory seems too liberal. It seems there can be more than one systematic whole which, while being internally coherent, contradict each other, and thus cannot all be true. Coherence is a necessary but not sufficient condition for truth.
Gist of Idea
The coherence theory allows multiple coherent wholes, which could contradict one another
Source
Leon Horsten (The Tarskian Turn [2011], 02.1)
Book Reference
Horsten,Leon: 'The Tarskian Turn' [MIT 2011], p.13
A Reaction
This is a modern post-Tarski axiomatic truth theorist making very short work indeed of the coherence theory of truth. I take Horsten to be correct.