The phrase "an unnecessary step" is correct and usable in written English.
You can use it to describe an action or procedure that is not needed or adds no value to a process.
Example: "In our analysis, we found that including a review phase was an unnecessary step that delayed the project timeline."
Alternatives: "a redundant step" or "an extraneous step".
He rarely takes an unnecessary step.
Doodling seems like an unnecessary step, and, honestly, my mind-set when I'm drawing isn't really a creative mind-set.
Although Mr. Chen's party, the Democratic Progressive Party, formally calls for independence, he says it is an unnecessary step.
Others think it's an unnecessary step, scoffing that toner, while often refreshing, doesn't offer any real benefits to the complexion.
From studying the iPod, if nothing else, Bang & Olufsen should have realized that the click wheel is so fast and efficient, the first-initial index mechanism is an unnecessary step.
China condemns the referendum as a step toward formal separation, and the United States has called it provocative and an unnecessary step that raises tension across the Taiwan Strait.
Cut out any unnecessary steps and lag time, and the usage of your mobile app will go up.
"Crowding hundreds of men onto an armory drill floor is a dangerous, unnecessary step backwards to the bad old days of the 1980s," Patrick Markee, senior policy analyst with Coalition for the Homeless, said in a written statement.
With the industry in a night and day different place than it was eight years ago (e.g. economic engine vs. a minor contributor), tariffs would be a significant and unnecessary step backwards.
He said that such a move on Trump's part would be purely an appeal to his neocon support base – and he hoped that senior officials would be able to influence Trump not to take such a drastic, and unnecessary step.
This was a totally provocative and unnecessary step and would have meant that unqualified staff were dispatched to emergencies.
