Hi,
i have application integrated with Foreign Exchange Rates API v1 already on production.
All examples and rates are for 3.04.2025 9:45.
When i send a request to get conversion rate as following:
{
"destinationCurrencyCode": "985",
"sourceCurrencyCode": "978",
"sourceAmount": "1000000"
}
so to get conversion for EUR -> PLN i got following response:
{
"conversionRate": "4.1567",
"destinationAmount": "4156673.33",
"currencyNumCode": "978"
}
Conversion rate for PLN to EUR is 4.1567 (value is rounded to 4 digits by application).
But when i do the same conversion here: Kalkulator walutowy | Visa i got conversion rate 1 EUR = 4.199358 PLN which differs a lot from what i get from API.
ECB conversion rate is EUR 1 = PLN 4.1775 (took from here: Polish zloty (PLN))
I see that using online calculator there is 0.53% markup used on value returned from ECB but event when i add 0.53% markup to the value returned by API it is still way off the value from online calculator.
I think i'm missing something which is not mentioned in documentation (some additional request parameter or calculation need to be done after?) or there is something wrong with configuration/API.
