D.C. Mun. Regs. tit. 23, r. 23-805
An ABRA investigator or MPD Officer is not precluded from issuing an administrative written warning before the issuance of a citation for a violation as permitted by § 800 of this title.
In not less than ten (10) business days following the issuance of an administrative written warning, an ABRA investigator shall conduct a subsequent inspection of the licensed premises to ensure that the licensee has taken corrective action for the violation found for which the administrative written warning was issued. If corrections to violations that resulted in the issuance of the administrative written warning are not completed at the time of the subsequent inspection, the ABRA investigator shall issue the licensee a citation or refer the matter to the ABC Board if (1) the licensee observes other violations that are not entitled to a warning or (2) the licensee already has three or more secondary tier violations.
A licensee entitled to a mandatory administrative written warning for a first violation shall not be entitled to a mandatory administrative written warning for a second or subsequent violation of the same offense committed within four (4) years of issuance of the first mandatory administrative written warning.
D.C. Mun. Regs. tit. 23, r. 23-805