These refunds do not affect MRR. They only impact Net Revenue and Other Revenue.
Our API expects currencies to be submitted in their smallest unit. The value 100 USD, for example, should be submitted to our API as 10,000 (i.e. 10,000 cents).
We consider the following currencies to be zero-decimal:
BIF, DJF, JPY, KRW, PYG, VND, XAF, XPF, CLP, GNF, KMF, MGA, RWF, VUV, XOF, ISK, HUF
Although the Hungarian Forint (HUF) is sometimes considered to have an exponent of 2, our API treats HUF as a zero-decimal currency. All HUF values should therefore be rounded to the nearest whole number (e.g. a charge of HUF 100.95 should be submitted to our API as 101).