What is "endaruta"

Endaruta was the ruler of Achshaph-(Akšapa of the letters), in the 1350- 1335 BC Amarna letters correspondence. Endaruta was the author of EA 223, ( EA for 'el Amarna'), of the letters. He is only referenced in two other letters EA 366 and 367, but EA 367, entitled: '' "From the Pharaoh to a vassal" '' is addressed to Endaruta, with instructions to guard his city. Pharaoh states Hanni–Khanni, is en route with the "archer-army force", and to prepare for their needs. Tablet-letter 367 is an undamaged, twenty-five line letter.