in src/objects/serverside/utils.js [122:133]
static normalizeCurrency (currency: string) {
currency = currency.trim().toLowerCase();
// Retain only alpha characters bounded for ISO code.
currency = currency.replace(/[^a-zA-Z]/g, '');
if (!currency_codes.codes().includes(currency.toUpperCase())) {
throw new Error("Invalid format for currency:'" + currency + "'.Please follow ISO 4217 3-letter standard for representing currency. Eg: usd");
}
return currency;
}