"The endgame is to tell the Israelis that now the international community has recognised the two-state solution on the '67 borders."
Erekat said Palestinians had decided to turn to the UN due to frustration at the lack of progress in stalled peace talks.
Barack Obama, the US president, has been trying to restart talks between Mahmoud Abbas, the Palestinian president, and Binyamin Netanyahu, the Israeli prime minister, since the US leader took office last January.
But the efforts have been hindered by the issue of illegal Israeli settlement construction in the occupied West Bank. Abbas has demanded a freeze in the construction before the resumption of negotiations.
Mohammed Dahlan, a senior official in Abbas's Fatah faction, said on Sunday that the UN initiative would be "a real test of the intentions of the international community", the Reuters news agency reported.
"We are now leading a diplomatic battle," he said.
"If the American administration does not agree, that will be another setback."
If the Security Council does not approve the measure, Dahlan said other options include a unilateral declaration of statehood and "popular, comprehensive resistance against settlement and the occupation".
But Israeli officials warned that any unilateral moves would harm peace efforts.
"Any unilateral statement that will be made by the Palestinians will not move the Israeli side forward in order to achieve peace," Silvan Shalom, Israel's vice-prime minister, said at Israel's weekly cabinet meeting on Sunday.
"I think the Palestinians should know that unilateral actions will not lead to the
results they hope for."
Mahdi Abdul Hadi, the chairman of the Palestinian Academic Society in Jerusalem, denied that the move was "unilateral".
"It cannot be unilateral. It is a collective effort, it is backed by the Palestinian people. It is simply because of the deadlock in the negotiations," he told Al Jazeera.
"It is time for the international community to recognise the ... Palestinian need to end the occupation. If we gain a United Nations resolution or a Security Council resolution, we can challenge the Israelis on the acts of things on the ground."
The US role
Marwan Bishara, Al Jazeera's senior political analyst, said: "Everyone knows this will not go to the Security Council without the green light from the US.
"If the US gives the green light, it means the relations between the US and Israel are in trouble.
"The US and Israel have avoided the Security Council for more than 16 years. To go back to it today, would be a major shift, a game changer in the diplomatic process.
"All Palestinians would be quite excited. Everyone, on all various levels, feels betrayed by a process that delivered not much after 16 years and seven agreements with the Israelis while quadrupling the illegal Israeli settlements."