The appeals chamber found that Ivanovic took part in the capture of Bosniak men who had surrendered and in their escorting to a warehouse in Kravica, a village near Srebrenica in eastern Bosnia and Herzegovina where about 1,000 were killed.
A trial chamber sentenced Ivanovic to 13 years for crimes against humanity. The appeals chamber quashed the sentenced and he was retried.
Serb troops killed more than 8,000 Bosniak men in Srebrenica and a UN-protected area in east Bosnia in the summer of 1995, which was the biggest war crime committed in Europe after World War II.