Repayment plan enforcement: resolution professional may require guarantor to remedy breach or seek adjudicating authority directions. Regulation 20 requires the resolution professional, upon forming an opinion that a guarantor has failed to implement the repayment plan, to issue notice within three days and require the guarantor to remedy the failure or explain it within fifteen days; if remedied or satisfactorily explained, the resolution professional must report to creditors within seven days, and otherwise may apply to the Adjudicating Authority for directions if the failure threatens implementation of the repayment plan.