Why did Ethiopia reject the 2002 border demarcation decision involving Badme?

The Ethiopian government rejected the 2002 border demarcation decision primarily because the international boundary commission awarded the town of Badme to Eritrea.12

Following the conclusion of the 1998–2000 border war, a peace agreement was signed in Algeria to resolve the conflict. However, when the boundary commission issued its ruling in 2002, the Ethiopian government, led by Meles Zenawi, protested the decision and refused to withdraw its troops from the territory recognized as Eritrean. This disagreement left the border demarcation unsettled for many years, contributing to continued regional tension until Ethiopia finally pledged to accept and implement the ruling in 2018 under Prime Minister Abiy Ahmed.1234