The explicit amount entered through the Input Amount and Input Amount Currency fields is converted to the document currency. The result is the end amount of the additional amount.
Example:
There's a document with currency 'BGN' and an additional amount entered as explicit amount - 60 EUR.
The additional amount is set to use round scale-up to the second digit after the decimal point.
If the conversion rate is from EUR to BGN 1.96, the additional amount is:
[Input Amount] = ROUND(60 * 1.96, 2) = 117.60 BGN.
See Percent calculation for comparison.