DMNFTF — Meaning of "same"

"all of the matching rules show the same output". Please precisely specify what "same" means here (presumably all output entries are equal using the equal operator defined for their type). What happens if a table specifies "Any", but a pair of matching rules return non-equal outputs? Presumably the behaviour is undefined.

Define that 'same' means equal, and that if the hit policy is Any and two matched rules do not have equal output entries, the result is undefined.