The phrase "first instance" refers to the initial or first time something happens or occurs. It is the beginning or starting point of a particular event or situation. Full definition
Another major factor is anonymity, which is preferred in first instance of communication until trust develops. (adultfindout.com)
Many civil and criminal matters are dealt with at first instance by state trial courts. (chambers-associate.com)
Whilst first instance decisions are not binding on other employment tribunals, the announcement should be seen as positive news for both employers and employees. (mooreblatch.com)