The War of Hum was fought in 1326–1329 between the Banate of Bosnia under Stjepan II Kotromanić and the Kingdom of Serbia under Stefan Dečanski Nemanjić.
[1] The Hum nobility approached Stjepan Kotromanić II, the ban of Bosnia, who then entered conflict with Serbia.
In 1329, Ban Stephen II of Kotromanić pushed another military attempt into Serbia with limited success, assaulting Lord Vitomir of Trebinje and Konavli, but the main portion of his force was defeated by the Young King Stefan Dušan who commanded the forces of King Stefan of Dečani at Pribojska Banja.
Thus, the Ban's campaign was partially successful, as he managed to add Nevesinje and parts of župa Zagorje (area between rivers of Upper Neretva, Bistrica and Sutjeska) to his realm.
The Republic of Ragusa refused with the explanation that it belongs to certain Dedić family from župa Popovo and that neither the Serbian nor the Bosnian rulers nor the Knez of Hum have a right to it.