Former social services minister Christian Porter has conceded departmental legal advice casting doubt on the legality of the robodebt scheme should have been given to him.
Mr Porter, who served in the role between 2015 and 2017, appeared before the royal commission into the robodebt scheme on Thursday.
The former minister said he was never provided with internal advice held by the Department of Social Services, which was created in 2014, that raised legal concerns with robodebt.