Summary: A rule or advice tells people in a practical situation how to act.
A good element of guidance is practicable. It must express something that can be applied in practical situations without further interpretation: it needs to be more definite than a general guideline. SBVR's definition of element of guidance is practicable is :
”The element of guidance is sufficiently detailed and precise that a person who knows the element of guidance can apply it effectively and consistently in relevant circumstances to know what behaviour is acceptable or not [...]” (SBVR 1.5)
Here is an example of a practicable element of guidance:
assuming that "free upgrade” is detailed elsewhere, perhaps in a definition.
Here is an example that is NOT a practicable element of guidance:
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