If an investigation of a complaint or an inspection of a child care center indicates a violation of this subtitle that does not present an immediate threat to the health, safety, and welfare of a child in care, the office may issue a warning in writing, on an inspection report or by separate letter, that states: The violation found, citing the regulation; The time period for correcting the violation; and That failure to correct the violation may result in sanctions being imposed or in suspension or revocation of the license.