The federal attorney-general's department failed to take action on changes to improve the way lobbyists are regulated, a new report has found.
The national lobbyist register, set up in 2008 to improve transparency and accountability, lists 257 organisations, 590 individual lobbyists and 1792 clients.
An auditor-general report from early 2018 made a number of recommendations to improve the register but a follow-up report released on Friday found the department had done little.
The department had not developed a strategy to raise awareness of the lobbyist code, assessed risks to compliance with the code or drawn up performance measures.
"There was no plan for the implementation of the ANAO recommendation," the auditor said.
Communications from the department focused on administrative responsibilities and did not target unregistered lobbyists.
Nor did it remind all lobbying organisations that employed former government representatives of the legal restrictions on their activities, writing to only six of the 29.
"Limited activities were undertaken to inform lobbyists and government representatives of their compliance obligations under the code," the audit found.
In the two years since the initial review, the lobbyist register was transferred from the prime minister's department to the attorney-general's.
The department told the auditor there had been "significant IT issues" during this transfer and it had focused efforts on making sure there was a reliable public register.
The audit found that despite known risks with the new IT system, it was put online without any user testing, checking of the migrated data or a "back-out strategy".
The department accepted the auditor's two new recommendations - one of which was to implement the recommendation from 2018 - and promised to make sure the integrity objectives of having the lobbyist register were upheld.
The Greens said the government appeared to have ignored warnings about strengthening the oversight of lobbyists.
"The Australian people have had enough of the faceless men and industry donors writing policy. They want their democracy back," the party's democracy spokeswoman Larissa Waters said.