Real Madrid say Uefa's proposal to reimburse some fans who attended last year's Champions League final is "insufficient" and have demanded all supporters should be compensated.
Real Madrid say they will not work with with Uefa's "limited" repayment scheme.
The club want Uefa to "rectify and assume full responsibility".
On Tuesday, the European governing body announced it would refund fans who had tickets for the final, which was played between Real Madrid and Liverpool on 28 May, in specific areas of the stadium.
Uefa said the refund scheme "covers all of the Liverpool FC ticket allocation for the final, ie 19,618 tickets".