In order for the appeal to succeed, the appellant must prove that the lower court committed reversible error, that is, an impermissible action by the court acted to cause a result that was unjust, and which would not have resulted had the court acted properly.
ɪn ˈɔːɹdɚ fɚðɪ ɐpˈiːl tə səksˈiːd, ðɪ ɐpˈɛlənt mˈʌst pɹˈuːv ðætðə lˈoʊɚ kˈoːɹt kəmˈɪɾᵻd ɹᵻvˈɜːsᵻbəl ˈɛɹɚ, ðæt ˈɪz, ɐn ɪmpɚmˈɪsᵻbəl ˈækʃən baɪ ðə kˈoːɹt ˈæktᵻd tə kˈɔːz ɐ ɹɪzˈʌlt ðæt wʌz ʌndʒˈʌst, ænd wˌɪtʃ wʊd nˌɑːɾɐv ɹɪzˈʌltᵻd hæd ðə kˈoːɹt ˈæktᵻd pɹˈɑːpɚli.