An error (from the Latin errāre, meaning 'to wander') is an inaccurate or incorrect action, thought, or judgement. In statistics, "error" refers to the difference between the value which has been computed and the correct value.
Störung, Fehler, Irrtum, Schnitzer
A error can be defined as being a gumption-trap
transgression. something that goes beyond boundaries.
In my view, forced errors tend to be market or competition-related, while unforced errors are mistakes of inexperience or process.