NEW YORK (Reuters) - Citigroup Inc on Wednesday pressed a federal appeals court to let it recoup about $504 million of its own money that it accidentally wired Revlon Inc lenders, saying its mistake did not entitle them to a huge windfall. The bank’s lawyer Neal Katyal said the lenders had six “red flags” of the error, and had not expected the cosmetics company controlled by billionaire Ronald Perelman to repay them for another three years. “If you hit rewind here, it’s not unfair,” Katyal told the 2nd U.S. Circuit Court of Appeals in Manhattan. “The parties get returned to the position that they bargained for.” But one member of the three-judge panel said a key precedent from New York state’s highest court appeared to leave legal questions about Citigroup’s payment and the lenders’ response unanswered, and which perhaps that court should answer first. “Each of those issues is really a question of policy,” Circuit Judge Pierre Leval said. “We would largely be guessing.” The case stemmed from New York-based Citigroup’s August 2020 prepayment of an $894-million loan for Revlon, which lacked enough cash to repay it, that was not due until 2023. Rather than return their share of the money, 10 asset managers whose clients included the Revlon lenders kept it. They said Citigroup, acting as Revlon’s loan agent, paid exactly what was owed, and they had no reason to believe a sophisticated bank would err so badly. The asset managers included Brigade Capital Management, HPS Investment Partners and Symphony Asset Management, among others. On Feb. 16, U.S. District Judge Jesse Furman ruled against Citigroup, saying the prepayment was a “discharge for value,” and the asset managers were not on notice of Citigroup’s blunder. Those managers deserve “finality,” their lawyer Kathleen Sullivan told the appeals court. She also said the prepayment seemed plausible because Perelman had previously bailed out Revlon. “They’d seen it before,” she said. But Katyal said the banking industry wires $5.4 trillion each day, and mistakes will happen. Industry groups have said a ruling against Citigroup could expose banks to excessive liability risks, and destabilize the approximately $1.2 trillion U.S. syndicated loan market. The case is In re Citibank August 11, 2020 Wire Transfers, 2nd U.S. Circuit Court of Appeals, No. 21-487. Our Standards: The Thomson Reuters Trust Principles.