Scarlets head coach Wayne Pivac bemoaned his side's errors during their 15-11 Champions Champions Cup defeat against Northampton on Saturday.
The Welsh region came close to claiming a vital away win at Franklin's Gardens but paid the price for missed opportunities.
Scarlets fly-half Steven Shingler and full-back Aled Thomas missed 11 points from the kicking tee and the visitors also failed to capitalise on a numerical advantage after Saints wing George North and flanker Jamie Gibson received yellow cards.
Wales scrum-half Gareth Davies scored his side's only try in the second half finish, which helped them to secure a losing bonus point could prove valuable later in the tournament.
But Pivac knows his charges could have had a better result.
"Errors cost us as well as a little bit of game management," he said.
"We made a few mistakes when we were not under pressure, especially in that first half.
"It started with a missed kick to touch in an attacking situation, then we are on the defensive and they score the first try. They are areas we are going to need to tidy up moving forward.
"At half-time we talked about our discipline and I thought we were inaccurate at the breakdown on the first half. In the second half we got some turnovers and there were good things in our game.
"But we need to tidy up our errors before we play Racing next Saturday, which being at home has now become a massive game for us in terms of how the pool pans out."