Unexpected Jumping Identity column 368320 to PO 369195 .

Jul 30 2019 3:30 AM

We recently update server from 2008 to 2016. I thought after two days it happen not once it hanppen twice. How can check. what happen for this unexpecting jumping. I looked lot of form from stackoverflow and other forms but i did't get any clartity. Please give me response ASAP

In sqlserver 2014