Erroneous

Containing an error; inaccurate.
Derived from an error.
Mistaken.
(obsolete) Wandering; erratic.
(law) Deviating from the requirements of the law, but without a lack of legal authority, thus not illegal.

Nouns to which "erroneous" is often applied: impression, assumption, belief, conclusion, statement, idea, data, view, opinion, judgment, notion, decision, interpretation, diagnosis, conception, theory, reading, instruction, ruling, assessment, doctrine, advice, value, application, thinking, perception, principle, concept, action, description, record, determination, teaching, inference, premise, conviction, reasoning, argument, exclusion, calculation, inclusion, treatment, deductions, analysis.