Meaning of 一身上都合 in Japanese

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Definition of 一身上都合

いっしんじょう(isshinjou) 【一身上】

(n, adj-no) personal (affairs)
私この度一身上の都合でやめさせていただきます。
I wish to resign from my work for purely personal reasons.

つごう(tsugou) 【都合】

(adv, n) circumstances; condition; convenience
何時がご都合よいでしょうか。
What time will be right for you?
(vs) to arrange; to manage
to lend money; to raise money
(adv) in all; in total; all told