Qld does not accept a gas certificate from any where else and I found I had to make a "change" from WA compliance. The gas guy reckoned the fold down cover over gas burners needed to be fixed down. Tape complied. Beats me totally.
Amazing isn't it, same country same tradesman different rules a few kms away. Idiocy!
Try changing states if youre a tradie (or school teacher, dont know about other professions), you have to jump through a lot of hoops just to be qualified.