Pretty sure I had a relative who was caught up in this. A postman in western Ukraine who allegedly ran a currency exchange business on the side - or at least that's what the NKVD said <- they had quotas to meet in making arrests, so who knows. Kinsman was released into a prisoners' battalion after the Nazis invaded, died defending Moscow.
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The Great Terror in Soviet Ukraine: a timeline
https://blog.oup.com/2017/12/great-terror-soviet-ukraine-timeline/