Ulster Unionists refuse to endorse Stormont House Agreement over 'uncertainties'
The Ulster Unionists have expressed severe reservations about the political deal.
Party officers have called for clarification of outstanding issues and voiced concern about the impact on public finances and side deals following the Stormont House Agreement negotiations.
The call came as First Minister Peter Robinson accused Secretary of State Theresa Villiers of breaking her word when she decided not to establish a panel to examine the north Belfast parades dispute.
The UUP's ruling party executive claimed there had been poor financial management by the leadership of the five-party power-sharing administration.
A statement said the Stormont House proposals "include many aspects of uncertainty" and leader Mike Nesbitt said: "This is primarily a deal between Sinn Fein, the DUP and the Government. The Ulster Unionist Party was not at the heart of the talks process. We see no reason to become the main cheerleaders and sales force now."