When a sheriff serves or attempts to serve a paper he shall file a return with the clerk of the court that issued the paper stating whether or not the paper was served, and other information required by rule or law.
Md. Code Ann., Cts. & Jud. Proc. § 2-303
Official source: Maryland General Assembly. Reproduced from public-domain Maryland statutes; confirm against the official source for the current text. Not legal advice.