Could you expand a little- it isn't clear what you mean. There are various theories of accuracy, such as defining it, or measuring it, or looking to see whether it is a good thing or not.
Chomsky-
He splits accuracy into two
Competence- what the speaker knows- if they make a competence error, it is because they don't know the rule.
Performance- this is where they know the rule, but make a mistake in practice.
