Join Date: Dec 2008
Location: Mostly living in the basement
Programs: Free Agent Level 2; MR LT(!)TE, HH SE, ALL SE, BAC Silver, DL MM, UA PS, 2V Fanboi, CBP GE
Posts: 5,362
You can technically have the same RUC applied against multiple reservations (though I don't know how willing the typical agent will be to do this). If it clears against one reservation then the other reservation clears, the second one will fail to reticket and stay in an error state until someone resolves it.
(At least IME.)