Then it is up to councillors to bring that decision back to the table for review. Whilst there is a six month rule to revisit decisions (designed to prevent things being constantly brought back when the decision doesn't go the way a few might wish), new information, such as information which suggests previous advice might be incorrect, is a perfectly valid reason for reviewing a decision. Clearly, this all has to be taken in context of what the decision is or how far it has been implemented but going back to the original point, minutes are a record of what has been agreed or decided at a meeting regardless of whether that decision was the right one at the time or whether that decision was influenced by incorrect information. Corrections or amendments to a decision are in themselves separate issues/decisions and should be recorded as such.