But on the eve of the AU's deadline for an agreement, the divided Darfur rebel movements voiced concerns about the accord, which they are negotiating at talks in Nigeria.
"The government is prepared to sign the (AU) document even with our reservations," said a spokesman.
"Our reservations are important, but they are not as important as to spoil the peace process."
The Darfur rebel groups, the Justice and Equality Movement (JEM), want guarantees from the international community.
"Before we sign the agreement, we need a clear guarantee from the African Union and the international community that the contents of the peace pact will be respected by all the parties to the conflict," said a spokesman.
"The movements believe that when dealing with the government in Khartoum we need all the assurance that we can get. We want these our reservations to be inserted in the AU peace document before we sign it."
An African Union spokesman said that while the AU was ready to explain "grey areas" in the document to any of the parties, it was not prepared to change the peace document which he said was drafted in conjunction with the international partners, including the League of Arab States.
The Darfur crisis has claimed more than 300,000 lives since the civil war broke out three years ago.
A million others have been displaced .
The UN's high commissioner for human rights, Louise Arbour, has arrived in Khartoum, amid growing calls for the government to end abuse of human rights, particularly in its suppression of the Darfur uprising.
Arbour was due to meet senior government officials and rights activists and visit Darfur.
The visit also comes amid fears that the grave humanitarian crisis in the western province has worsened.
Adding to those fears, The United Nations says severe funding shortages will force it to halve food aid for Sudan, including Darfur.