How to solve – “Base currency rate must be 100”

Description
The exchange-rate values configured for the base currency do not meet the required POS365 setup.

Answer

1. Open Currencies in Business Central.
2. Find the base currency and open its exchange rates.
3. Enter a valid Starting Date.
4. Set both Exchange Rate Amount and Relational Exch. Rate Amount to 100.
5. Ensure that this is the first applicable exchange-rate line.

Indepth guide link: "Download Business Central extension and set up integration"