On April 11, USCIS used a computer-generated random selection process to select enough H-1B petitions to meet the congressionally-mandated cap and the U.S. advanced degree exemption, known as the master’s cap, for fiscal year (FY) 2019.
USCIS received 190,098 H-1B petitions (95,885 for Master’s Cap and 94,213 for Regular Cap) during the filing period, which began April 2, including petitions filed for the advanced degree exemption. USCIS announced on April 6, that it had received enough H-1B petitions to reach the statutory cap of 65,000 and the master’s cap of 20,000. USCIS will reject and return all unselected petitions with their filing fees unless the petition is a prohibited multiple filing.
USCIS conducted the selection process for the master’s cap first. All unselected master’s cap petitions then became part of the random selection process for the 65,000 cap.
Cite and refer to: https://www.uscis.gov/news/alerts/uscis-completes-h-1b-cap-random-selection-process-fy-2019