The Nigerian Under-20 team are in South Africa to face Amajita in the first leg of their final round tie, and Obuh says victory is non-negotiable.
"We are going there to win because we have prepared hard over the last few weeks and I believe the players know what is expected of them," Obuh said.
"We want to qualify Nigeria for the championship and it doesn't matter who we have to meet to get there.
"Nigerians want us to be there and we have no choice but to get there."
Obuh's team travelled to South Africa on the back of impressive results in previous games.
They beat Tanzania over two legs to reach this stage and drew 1-1 with Benin Republic in a tune-up game last week.
Kick-off is at 6pm Nigeria time and Obuh has already named his starting line-up.
Flying Eagles Starting XI:
GK: Samuel Okani (skipper) –
DF: Halilu Obadaki, Shehu Abdullahi, Ikechukwu Okorie, Chizoba Amaefule
MF: Ovboka Agboyi, Abduljaleel Ajagun, Moses Orkuma.
ST: Bright Ejike, Alhaji Gero, Chidi Osuchukwu
Subs: Jonah Usman, Hassan Abubakar, Tope Aluko, Uche Agbo, Umar Aminu, Yahaya Adamu, Izegbu Abonima.