A Nations League match between Romania and Kosovo in Bucharest was abandoned in stoppage time on November 15 after Kosovar players left the field complaining of racist abuse from Romanian fans.
The Kosovar players headed for the dressing room in the 93rd minute after home fans chanted, "Serbia! Serbia!" during a scuffle between Kosovo captain Amir Rrahmani and Romanian striker Denis Alibec.
The manager of Kosovo's national team, Bajram Shala, said that the decision to abandon the match was made by the Kosovar football federation, coach Franco Foda, and the team itself, after "racist calls" against Kosovo.
UEFA is expected to open a disciplinary procedure that could cost Kosovo a defeat for not accepting to return to the field.
UEFA said it would communicate "further information in due course."
Kosovo declared independence from Serbia in 2008 and has been recognized by more than 100 countries, but not Romania.