Universal 206: ergative alignment ⇒ case (Erg/Abs) & personal affix (Erg/Abs)
Original
The most important implications of ergativity are the following: the opposition of ergative and absolutive series in personal affixes in the verb conjugation and the opposition of the ergative and absolutive cases in the noun declension, similar to each other in their function.
Standardized
IF alignment is ergative, THEN there will be an opposition of ergative and absolutive series of personal affixes in verb inflection and an opposition of an ergative and an absolutive case in noun inflection, similar to each other in their function.
The absence of one of the implicatum conjuncts can supposedly be compensated by the presence of the other.