Barcelona have filed a second complaint with UEFA over the refereeing during their Champions League quarter-final against Atletico Madrid.
The Catalan club were furious after their elimination at the Metropolitano, with striker Raphinha calling the match a "stealing".
Barcelona were eliminated after losing 3-2 on aggregate, in a clash that saw red cards in both legs. The club claims they should have won penalties in both legs, a claim that has been disputed by Atletico.
According to Barcelona, some referee decisions were not in accordance with the rules and VAR did not intervene properly. They say these errors directly influenced the final result and caused sporting and financial damage.
Last week, Barcelona also complained about a handball incident involving defender Marc Pubill, but UEFA rejected that complaint as "unacceptable." The club is now also seeking cooperation from UEFA to improve the refereeing system.