'existing group', 'this word is usually translated by 'personality',
but according to the commentaries it corresponds to sat-kāya, 'existing group', hence not to Sanskrit sva-kāya, 'own group' or 'own body'.
In the suttas (e.g. M.44) it is said to be a name for the 5 groups of existence (khandha):
"Sakkāya, o Brother Visākha, is said by the Blessed One to be a name for the 5 'groups as objects of clinging' (upādāna-kkhandha), to wit: corporeality, feeling, perception, mental formations, and consciousness." - See foll.