However, the Board argues that, within certain acceptable limits of error, this is not a problem, so long as we bear in mind the practical purpose of the measures:
2.
In practice, representations of the real world are created as and known to be approximations to the basic reality, and their use is circumscribed by the limits of error of measurements in any given practical application.
3.
A limitation to SMAPE is that if the actual value or forecast value is 0, the value of error will boom up to the upper-limit of error . ( 200 % for the first formula and 100 % for the second formula ).
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