Barcelona are demanding answers from the Spanish Football Federation (RFEF) over Robert Lewandowski's disallowed goal against Real Sociedad.

Barcelona suffered their second La Liga loss of the season following a 1-0 defeat at Sociedad on Sunday, but Hansi Flick's men controversially had a goal ruled out. A VAR review found that Lewandowski was offside for his 13th minute goal but the Catalan club are complaining there was an error on the part of the system. Now, Relevo claims the Blaugrana want an explanation on this matter.

The report states Barcelona president Joan Laporta was heard saying "It can't be" about the disallowed goal at the Reale Arena and that manager Flick later told referee Cuadra Fernandez that he made the "wrong decision".

Ultimately, Barca went on to lose the game, meaning they missed the chance to go nine points clear at the top of La Liga.

The report adds Barcelona will ask for explanations to find out exactly what happened and try to find solutions for the future in these types of situations. They also pointed out that the replays didn't show Lewandowski was offside but VAR made the error.

Barcelona will have to stew on this mistake for nearly a fortnight as they are not in La Liga action again until they travel to Celta Vigo on November 23.