Because of its position so close to the heart of the empire, it was often paid more attention by the Hittites, which considered it a bit like a buffer between the motherland and its Arzawa vassals.
[2] Later, when the Hittites are retaking their lands under Suppiluliuma I (c. 1350 BC), he sends his army into Hapalla,[3] whose capital is burnt down and inhabitants deported.
[4] The first sovereign known to us from Hapalla was Targasnalli who, after the failure of the uprising of Uhha-Ziti against Hittite monarch Muršili II (1319 BC), agreed to submit again to the authority of Hattuša and therefore was "...re-installed on the throne of Hapalla by the Hittite ruler".
The second ruler of Hapalla, a certain Ura-Hattusa, who appears in Alaksandu's treaty of 1280 BC, where the Hittite ruler Muwatalli II, son of Mursili, lists the four sovereigns of the surviving Arzawa kingdoms (What remained of Arzawa had been annexed by Mira) mentioning Ura-Hattusa as king of Hapalla.
It is now believed by scholars that towards the end of the Hittite empire (c. 1230 BC), King Tudhaliya IV established the State of Mira as the regional supervisor of Western Anatolia, with Hapalla most likely under its supervision.