PSLV-C40 was the 42nd mission of the Indian Polar Satellite Launch Vehicle (PSLV) program in the XL configuration.

PSLV-C40 successfully carried and deployed 31 satellites in Sun-synchronous orbits.

[2][3] Four SpaceBEE sub-CubeSats were launched to test "2-way satellite communications and data relay", probably for the Silicon Valley company Swarm Technologies.

However, the U.S. Federal Communications Commission (FCC) had denied regulatory approval for Swarm Technologies 10 cm × 10 cm × 2.8 cm BEE satellites as they were too small to be reliably tracked by the United States Space Surveillance Network, so may become an impact hazard to other satellites.

If confirmed, the FCC may take regulatory action over these satellites.