# `Accrue.Money.MismatchedCurrencyError`
[🔗](https://github.com/szTheory/accrue/blob/accrue-v0.3.0/lib/accrue/money/mismatched_currency_error.ex#L1)

Raised when `Accrue.Money` arithmetic is attempted across two different
currencies. Per D-04, cross-currency math never silently coerces or returns
a tagged tuple — it raises at the call site so the bug surfaces immediately.

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*Consult [api-reference.md](api-reference.md) for complete listing*