(AP) — Sporting Kansas City’s MLS Cup presale for season-ticket members was apparently compromised.

Real Salt Lake fans acquired the online code and bought up tickets during the Tuesday presale for the Dec. 7 game, which will decide the MLS champion at Sporting Park.

Real Salt Lake says the tickets bought by the leaked code will be cancelled. The visiting team is allotted 1,000 tickets, which will be distributed by Real Salt Lake.

Tickets bought by Sporting KC season-ticket members using the compromised code also will be invalidated.

Sporting KC officials confirm the presale went awry, but says the team will work with season-ticket holders who made legal pre-sale purchases to ensure they have game tickets. Tickets go on sale to the general public Monday.