A delegation from the Palestinian Authority met on Friday with presidential adviser Jared Kushner to warn the Trump Administration that if it announces the relocation of the US Embassy from Tel Aviv to Jerusalem, or if President Donald Trump makes remarks acknowledging Jerusalem as Israels capital, this would mark the end of the peace process, Israeli TV reports said.
As of Saturday night, Trump had not signed a waiver delaying the move of the embassy by another six months, and he has only until Monday to do so. A stream of media reports in recent days have indicated that the president intends to declare in a speech within days that he considers Jerusalem to be Israels capital, and that he may say he is instructing his team to prepare to move the embassy.
....
Any such steps will kill the negotiations, the PA delegation which included Majed Faraj and Saeb Erekat, senior officials close to PA President Mahmoud Abbas told Kushner on Friday, Hadashot news reported on Saturday night.
Recognizing Jerusalem as Israels capital and/or announcing that the embassy will be moved would mark the end of the peace process, they reportedly said.
https://www.timesofisrael.com/palestinians-to-kushner-peace-process-ends-if-trump-backs-israel-on-jerusalem/
Note that there are no negotiations or a so called "peace process". The Palestinians are in the midst of another attempt of reconciliation between hamas and fatah, which will likely fail. There currently are no elected leaders of the Palestinians who could legitimately represent the Palestinians at the negotiating table. Further note that only Antisemites deny the jewish connection to J'lem, it's not a debatable issue.