The Bulldogs failed to notify ASADA that 12 of their players would be part of a training camp in the USA between November 5-19.
That violates the sport's anti-doping code, which says all clubs in the AFL are required to keep ASADA notified at all times of the location of listed players, for testing purposes.
The Bulldogs are one of several smaller clubs in line for financial assistance as part of the league's equalisation strategy, which is aimed to partly offset unfair fixturing and marketing from the AFL.
They had notified the AFL in advance of their decision to conduct an overseas training camp, but not ASADA.
"The club has a strong history of compliance with all the paperwork requirements of the anti-doping code to ensure that ASADA is fully informed at all times and can perform its duties," the AFL's general counsel Andrew Dillon said.
"In this instance, while the AFL had been notified of the club's activities, ASADA was not separately notified. While this was an administrative error, it is important that the rules are fully complied with."
AFL players may be tested 365 days of the year for banned performance-enhancing drugs.