Where such discussions fail to resolve matters to the CBB's satisfaction, then it may issue a formal warning. Failure to respond adequately to a formal warning will lead the CBB to consider more severe enforcement measures. However, more severe measures may not require the prior issuance of a formal warning — depending on its assessment of the circumstances, the CBB may decide to have immediate recourse to other measures. Similarly, there may be circumstances where the CBB issues a formal warning without prior discussion with the licensee or person concerned: this would usually be the case where a clear-cut compliance failing has occurred.