UEFA has called on soccer's lawmaking panel to delay a decision on approving goal-line technology next week.
The European soccer body also pledged full support Saturday for its rival five-officials method of refereeing, despite an error that denied Ukraine a goal in a decisive European Championship group match against England.
The panel, known as IFAB and featuring representatives of FIFA, meets next Thursday and could approve either or both projects.
UEFA secretary general Gianni Infantino says it wants "an open debate on technology in football involving stakeholders before any decision is taken."
UEFA President Michel Platini questioned whether the two goal-line systems have worked in FIFA-led tests.