Ulster coach Brian McLaughlin blamed his team's high error count for the 18-3 defeat to Leinster in the Magners League play-off semi-final.
"In the second half we made too many errors," said McLaughlin.
"Leinster are an exceptional side and against a team like this you can't make errors, and it cost us in the end.
"I'm exceptionally disappointed - we gave away two soft tries. We played with pride but we need to be more patient in defence and with the ball."
Ulster trailed 11-0 at the break in Dublin and Luke Fitzgerald's try on 72 minutes sealed victory for the Heineken Cup finalists.
McLaughlin added: "It was a tough, physical game of rugby and we felt at half-time that if we had kept them to eight points we had a chance, as it was a 10-point wind.
"We've had a good season - we've qualified for the Heineken Cup and we have reached the top four in the Magners League.
"But we have to look at the next step. That is when we get to these stages we need to be able to take the next step after that."