Where can I find the POS365 hosting-region setting?
You want to check the selected integration region.
Note: This FAQ uses the POS365 Manager role and English page names. If your screen looks different, follow Access the POS365 UI (user interface) Manager role in Business Central. Changing the language to English is optional, but makes it easier to follow this FAQ.
Answer:
In POS365 Navigation, under POS365 Setup, select PON Integration Setup. On the POS365 Company Integration Setup [PON] list, find the relevant company's row. POS365 API Hosting Region is immediately to the right of POS365 Company ID. Scroll horizontally if needed.